CVE catalog
CVE-2026-23490
pyasn1 vulnerability
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.76% · Oct 25, 2026
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pyasn1 | sid | 0.6.4-1 | fixed |
| Debian | pyasn1 | forky | 0.6.4-1 | fixed |
| Debian | pyasn1 | trixie | 0.6.1-1+deb13u3 | fixed |
| Debian | pyasn1 | trixie-security | 0.6.1-1+deb13u2 | fixed |
| Debian | pyasn1 | bookworm | 0.4.8-3+deb12u2 | fixed |
| Debian | pyasn1 | bookworm-security | 0.4.8-3+deb12u3 | fixed |
| Ubuntu | pyasn1 | noble | 0.4.8-4ubuntu0.1 | fixed |
| Ubuntu | python-pyasn1-doc | noble | 0.4.8-4ubuntu0.1 | fixed |
| Ubuntu | python3-pyasn1 | noble | 0.4.8-4ubuntu0.1 | fixed |
| PyPI | pyasn1 | Not reported | 0.6.2 | fixed |
| Cpe | pyasn1 | Not reported | 0.6.2 | fixed |
| Cpe | debian_linux | Not reported | Not reported | unknown |
| Ubuntu | pyasn1 | pro | 0.4.2-3 | vulnerable |
| Ubuntu | pyasn1 | pro | 0.4.2-3build1 | vulnerable |
| Ubuntu | pyasn1 | pro | 0.4.2-3ubuntu0.20.04.1~esm1 | fixed |
| Ubuntu | pyasn1 | 22.04 | 0.4.8-1 | vulnerable |
| Ubuntu | pyasn1 | 22.04 | 0.4.8-1ubuntu0.1 | fixed |
| Ubuntu | pyasn1 | 24.04 | 0.4.8-4 | vulnerable |
| Ubuntu | pyasn1 | 24.04 | 0.4.8-4ubuntu0.1 | fixed |
| Ubuntu | pyasn1 | 25.10 | 0.6.1-1 | vulnerable |
| Ubuntu | pyasn1 | 25.10 | 0.6.1-1ubuntu0.1 | fixed |
| Ubuntu | pyasn1 | 22.04 | 0.4.8-1 | vulnerable |
| Ubuntu | pyasn1 | 22.04 | 0.4.8-1ubuntu0.1 | fixed |
| Ubuntu | pyasn1 | 24.04 | 0.4.8-4 | vulnerable |
| Ubuntu | pyasn1 | 24.04 | 0.4.8-4ubuntu0.1 | fixed |
| Ubuntu | pyasn1 | 25.10 | 0.6.1-1 | vulnerable |
| Ubuntu | pyasn1 | 25.10 | 0.6.1-1ubuntu0.1 | fixed |
| Opensuse | python-pyasn1 | leap 16.0 | 0.6.1-160000.3.1 | fixed |
| Opensuse | python-pyasn1 | tumbleweed | 0.6.2-1.1 | fixed |
| Suse | python-pyasn1 | linux micro 6.1 | 0.5.0-slfo.1.1_2.1 | fixed |
| Suse | python-pyasn1 | linux micro 6.0 | 0.5.0-3.1 | fixed |
| Suse | python-pyasn1 | linux micro 6.2 | 0.6.1-160000.3.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server 16.0 | 0.6.1-160000.3.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server for sap applications 16.0 | 0.6.1-160000.3.1 | fixed |
| Suse | python-pyasn1 | linux enterprise micro 5.3 | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise micro 5.4 | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise micro 5.5 | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise module for basesystem 15 sp7 | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise high performance computing 15 sp4-espos | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise high performance computing 15 sp4-ltss | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise high performance computing 15 sp5-espos | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise high performance computing 15 sp5-ltss | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server 15 sp4-ltss | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server 15 sp5-ltss | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server 15 sp6-ltss | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server for sap applications 15 sp4 | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server for sap applications 15 sp5 | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server for sap applications 15 sp6 | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise micro 5.2 | 0.4.2-150000.3.13.1 | fixed |
| Suse | python-pyasn1 | linux enterprise module for public cloud 15 sp4 | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise module for python 3 15 sp7 | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise high performance computing 15 sp4-espos | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise high performance computing 15 sp4-ltss | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise high performance computing 15 sp5-espos | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise high performance computing 15 sp5-ltss | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server 15 sp4-ltss | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server 15 sp5-ltss | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server 15 sp6-ltss | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server for sap applications 15 sp4 | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server for sap applications 15 sp5 | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server for sap applications 15 sp6 | 0.5.0-150400.12.10.1 | fixed |
| Opensuse | python-pyasn1 | leap 15.6 | 0.5.0-150400.12.10.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server 12 sp5-ltss | 0.1.9-4.11.1 | fixed |
| Suse | python-pyasn1 | linux enterprise server ltss extended security 12 sp5 | 0.1.9-4.11.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pyasn1 | source | sid | 0.6.2-1 | not yet assigned | Not reported | [1125753] |
| Debian | pyasn1 | source | forky | 0.6.2-1 | not yet assigned | Not reported | [1125753] |
| Debian | pyasn1 | source | trixie | 0.6.1-1+deb13u1 | not yet assigned | Not reported | [1125753] |
| Debian | pyasn1 | source | bookworm | 0.4.8-3+deb12u1 | not yet assigned | Not reported | [1125753] |
| Ubuntu | pyasn1 | deb | noble | 0.4.8-4ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | python-pyasn1-doc | deb | noble | 0.4.8-4ubuntu0.1 | Not reported | Not reported | Not reported |
| Ubuntu | python3-pyasn1 | deb | noble | 0.4.8-4ubuntu0.1 | Not reported | Not reported | Not reported |
| PyPI | pyasn1 | PyPI | Not reported | 0.6.2 | Not reported | GHSA-63VM-454H-VHHQ | Not reported |
| Cpe | pyasn1 | cpe | Not reported | 0.6.2 | Not reported | NVD-CVE-2026-23490 | Not reported |
| Ubuntu | pyasn1 | deb | pro | 0.4.2-3ubuntu0.20.04.1~esm1 | Not reported | UBUNTU-CVE-2026-23490 | Not reported |
| Ubuntu | pyasn1 | deb | 22.04 | 0.4.8-1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-23490 | Not reported |
| Ubuntu | pyasn1 | deb | 24.04 | 0.4.8-4ubuntu0.1 | Not reported | UBUNTU-CVE-2026-23490 | Not reported |
| Ubuntu | pyasn1 | deb | 25.10 | 0.6.1-1ubuntu0.1 | Not reported | UBUNTU-CVE-2026-23490 | Not reported |
| Ubuntu | pyasn1 | deb | 22.04 | 0.4.8-1ubuntu0.1 | Not reported | USN-7975-1 | Not reported |
| Ubuntu | pyasn1 | deb | 24.04 | 0.4.8-4ubuntu0.1 | Not reported | USN-7975-1 | Not reported |
| Ubuntu | pyasn1 | deb | 25.10 | 0.6.1-1ubuntu0.1 | Not reported | USN-7975-1 | Not reported |
| Opensuse | python-pyasn1 | rpm | leap 16.0 | 0.6.1-160000.3.1 | Not reported | OPENSUSE-SU-2026:20089-1 | Not reported |
| Opensuse | python-pyasn1 | rpm | tumbleweed | 0.6.2-1.1 | Not reported | OPENSUSE-SU-2026:10078-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux micro 6.1 | 0.5.0-slfo.1.1_2.1 | Not reported | SUSE-SU-2026:20482-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux micro 6.0 | 0.5.0-3.1 | Not reported | SUSE-SU-2026:20447-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux micro 6.2 | 0.6.1-160000.3.1 | Not reported | SUSE-SU-2026:20158-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server 16.0 | 0.6.1-160000.3.1 | Not reported | SUSE-SU-2026:20133-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server for sap applications 16.0 | 0.6.1-160000.3.1 | Not reported | SUSE-SU-2026:20133-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise micro 5.3 | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise micro 5.4 | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise micro 5.5 | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise module for basesystem 15 sp7 | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise high performance computing 15 sp4-espos | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise high performance computing 15 sp4-ltss | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise high performance computing 15 sp5-espos | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise high performance computing 15 sp5-ltss | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server 15 sp4-ltss | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server 15 sp5-ltss | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server 15 sp6-ltss | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server for sap applications 15 sp4 | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server for sap applications 15 sp5 | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server for sap applications 15 sp6 | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise micro 5.2 | 0.4.2-150000.3.13.1 | Not reported | SUSE-SU-2026:0430-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise module for public cloud 15 sp4 | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise module for python 3 15 sp7 | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise high performance computing 15 sp4-espos | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise high performance computing 15 sp4-ltss | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise high performance computing 15 sp5-espos | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise high performance computing 15 sp5-ltss | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server 15 sp4-ltss | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server 15 sp5-ltss | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server 15 sp6-ltss | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server for sap applications 15 sp4 | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server for sap applications 15 sp5 | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server for sap applications 15 sp6 | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Opensuse | python-pyasn1 | rpm | leap 15.6 | 0.5.0-150400.12.10.1 | Not reported | SUSE-SU-2026:0252-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server 12 sp5-ltss | 0.1.9-4.11.1 | Not reported | SUSE-SU-2026:0300-1 | Not reported |
| Suse | python-pyasn1 | rpm | linux enterprise server ltss extended security 12 sp5 | 0.1.9-4.11.1 | Not reported | SUSE-SU-2026:0300-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [python313-pyasn1]Unknown
Source package: [python-pyasn1]
Details (1)
0.6.4-1.1· noarch · tumbleweedUnknown · Fixed:
0.6.2-1.1Version impact unknown
usn · python-pyasn1 · opensuse · tumbleweed
- [python314-pyasn1]Unknown
Source package: [python-pyasn1]
Details (1)
0.6.4-1.1· noarch · tumbleweedUnknown · Fixed:
0.6.2-1.1Version impact unknown
usn · python-pyasn1 · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [python3-pyasn1]Fixed
Source package: [pyasn1]
Details (4)
0.4.8-3+deb12u2· all · bookwormFixed · Fixed:
0.4.8-3+deb12u1usn · pyasn1 · debian · bookworm; usn · pyasn1 · debian · 12
0.4.8-3+deb12u2· all · bookwormFixed · Fixed:
0.4.8-3+deb12u1usn · pyasn1 · debian · bookworm; usn · pyasn1 · debian · 12
0.4.8-3+deb12u2· all · bookworm-securityFixed · Fixed:
0.4.8-3+deb12u1usn · pyasn1 · debian · bookworm; usn · pyasn1 · debian · 12
0.4.8-3+deb12u2· all · bookworm-securityFixed · Fixed:
0.4.8-3+deb12u1usn · pyasn1 · debian · bookworm; usn · pyasn1 · debian · 12
- [python-pyasn1-doc]Fixed
Source package: [pyasn1]
Details (4)
0.4.8-3+deb12u2· all · bookwormFixed · Fixed:
0.4.8-3+deb12u1usn · pyasn1 · debian · bookworm; usn · pyasn1 · debian · 12
0.4.8-3+deb12u2· all · bookwormFixed · Fixed:
0.4.8-3+deb12u1usn · pyasn1 · debian · bookworm; usn · pyasn1 · debian · 12
0.4.8-3+deb12u2· all · bookworm-securityFixed · Fixed:
0.4.8-3+deb12u1usn · pyasn1 · debian · bookworm; usn · pyasn1 · debian · 12
0.4.8-3+deb12u2· all · bookworm-securityFixed · Fixed:
0.4.8-3+deb12u1usn · pyasn1 · debian · bookworm; usn · pyasn1 · debian · 12
[Debian 13 (Trixie)]
- [python3-pyasn1]Fixed
Source package: [pyasn1]
Details (6)
0.6.1-1+deb13u2· all · trixieFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.1-1+deb13u2· all · trixieFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.4-1~bpo13+1· all · trixie-backportsFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.4-1~bpo13+1· all · trixie-backportsFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.1-1+deb13u2· all · trixie-securityFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.1-1+deb13u2· all · trixie-securityFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
- [python-pyasn1-doc]Fixed
Source package: [pyasn1]
Details (6)
0.6.1-1+deb13u2· all · trixieFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.1-1+deb13u2· all · trixieFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.4-1~bpo13+1· all · trixie-backportsFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.4-1~bpo13+1· all · trixie-backportsFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.1-1+deb13u2· all · trixie-securityFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
0.6.1-1+deb13u2· all · trixie-securityFixed · Fixed:
0.6.1-1+deb13u1usn · pyasn1 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-23490]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-23490]
- [https://osv.dev/vulnerability/DLA-4463-1]
- [https://osv.dev/vulnerability/DSA-6114-1]
- [https://osv.dev/vulnerability/GHSA-63vm-454h-vhhq]
- [https://osv.dev/vulnerability/SUSE-SU-2026:0252-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:0300-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:0430-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:20133-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:20158-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:20447-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:20482-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-23490]
- [https://osv.dev/vulnerability/USN-7975-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10078-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:20089-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-23490]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23490.json]
- [https://ubuntu.com/security/notices/USN-7975-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1194.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]