CVE catalog
CVE-2026-80179
A flaw was found in jwcrypto. A remote attacker can send a specially crafted JSON Web Encryption (JWE) token containing numerous period delimiters. This malformed token can force the JWE.deserialize()
- Severity
- Medium · CVSS 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.41% · Oct 25, 2026
A flaw was found in jwcrypto. A remote attacker can send a specially crafted JSON Web Encryption (JWE) token containing numerous period delimiters. This malformed token can force the JWE.deserialize() function to allocate excessive memory, leading to a MemoryError. This issue results in a denial of service (DoS) for services that process untrusted JWE values.
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 | python-jwcrypto | sid | 1.5.6-1.2 | vulnerable |
| Debian | python-jwcrypto | forky | 1.5.6-1.2 | vulnerable |
| Debian | python-jwcrypto | trixie | 1.5.6-1.1~deb13u1 | vulnerable |
| Debian | python-jwcrypto | bookworm | 1.1.0-1+deb12u1 | vulnerable |
| Suse | python-jwcrypto | linux enterprise server 16.0 | 1.5.6-160000.4.1 | fixed |
| Suse | python-jwcrypto | linux enterprise server for sap applications 16.0 | 1.5.6-160000.4.1 | fixed |
| Suse | python-jwcrypto | linux enterprise server 16.0 | 1.5.6-160000.4.1 | fixed |
| Suse | python-jwcrypto | linux enterprise server for sap applications 16.0 | 1.5.6-160000.4.1 | fixed |
| Opensuse | python-jwcrypto | leap 16.0 | 1.5.6-160000.4.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-jwcrypto | source | sid | (unfixed) | not yet assigned | Not reported | [1145983] |
| Debian | python-jwcrypto | source | forky | (unfixed) | not yet assigned | Not reported | [1145983] |
| Debian | python-jwcrypto | source | trixie | (unfixed) | not yet assigned | Not reported | [1145983] |
| Debian | python-jwcrypto | source | bookworm | (unfixed) | not yet assigned | Not reported | [1145983] |
| Suse | python-jwcrypto | rpm | linux enterprise server 16.0 | 1.5.6-160000.4.1 | Not reported | SUSE-SU-2026:23722-1 | Not reported |
| Suse | python-jwcrypto | rpm | linux enterprise server for sap applications 16.0 | 1.5.6-160000.4.1 | Not reported | SUSE-SU-2026:23722-1 | Not reported |
| Suse | python-jwcrypto | rpm | linux enterprise server 16.0 | 1.5.6-160000.4.1 | Not reported | SUSE-SU-2026:23702-1 | Not reported |
| Suse | python-jwcrypto | rpm | linux enterprise server for sap applications 16.0 | 1.5.6-160000.4.1 | Not reported | SUSE-SU-2026:23702-1 | Not reported |
| Opensuse | python-jwcrypto | rpm | leap 16.0 | 1.5.6-160000.4.1 | Not reported | OPENSUSE-SU-2026:21827-1 | Not reported |
Notes
[trixie] python-jwcrypto: Minor issue [bookworm] python-jwcrypto: Minor issue, DoS
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-jwcrypto]Affected
Source package: [python-jwcrypto]
Details (2)
1.1.0-1+deb12u1· all · bookwormAffected
nvd · python-jwcrypto · debian · bookworm; nvd · python-jwcrypto · debian · 12
1.1.0-1+deb12u1· all · bookwormAffected
nvd · python-jwcrypto · debian · bookworm; nvd · python-jwcrypto · debian · 12
[Debian 13 (Trixie)]
- [python3-jwcrypto]Affected
Source package: [python-jwcrypto]
Details (2)
1.5.6-1.1~deb13u1· all · trixieAffected
nvd · python-jwcrypto · debian · 13
1.5.6-1.1~deb13u1· all · trixieAffected
nvd · python-jwcrypto · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11712-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-80179]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-80179]
- [https://osv.dev/vulnerability/SUSE-SU-2026:23702-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:23722-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21827-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-80179]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80179.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]