CVE catalog
CVE-2020-5390
python-pysaml2: CVE-2020-5390
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.23% · Oct 25, 2026
PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertion that have been signed.
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-pysaml2 | sid | 7.5.4-3 | fixed |
| Debian | python-pysaml2 | forky | 7.5.4-3 | fixed |
| Debian | python-pysaml2 | trixie | 7.5.0-4 | fixed |
| Debian | python-pysaml2 | bookworm | 7.0.1-2 | fixed |
| Opensuse | python-pysaml2 | tumbleweed | 7.5.4-1.1 | fixed |
| Ubuntu | python-pysaml2 | 16.04 | 2.4.0-0ubuntu2 | vulnerable |
| Ubuntu | python-pysaml2 | 16.04 | 3.0.0-3ubuntu1 | vulnerable |
| Ubuntu | python-pysaml2 | 16.04 | 3.0.0-3ubuntu1.16.04.1 | vulnerable |
| Ubuntu | python-pysaml2 | 16.04 | 3.0.0-3ubuntu1.16.04.3 | vulnerable |
| Ubuntu | python-pysaml2 | 16.04 | 3.0.0-3ubuntu1.16.04.4 | fixed |
| Ubuntu | python-pysaml2 | 18.04 | 3.0.0-3ubuntu2 | vulnerable |
| Ubuntu | python-pysaml2 | 18.04 | 4.0.2-0ubuntu2 | vulnerable |
| Ubuntu | python-pysaml2 | 18.04 | 4.0.2-0ubuntu3 | vulnerable |
| Ubuntu | python-pysaml2 | 18.04 | 4.0.2-0ubuntu3.1 | fixed |
| Ubuntu | python-pysaml2 | 16.04 | 2.4.0-0ubuntu2 | vulnerable |
| Ubuntu | python-pysaml2 | 16.04 | 3.0.0-3ubuntu1 | vulnerable |
| Ubuntu | python-pysaml2 | 16.04 | 3.0.0-3ubuntu1.16.04.1 | vulnerable |
| Ubuntu | python-pysaml2 | 16.04 | 3.0.0-3ubuntu1.16.04.3 | vulnerable |
| Ubuntu | python-pysaml2 | 16.04 | 3.0.0-3ubuntu1.16.04.4 | fixed |
| Ubuntu | python-pysaml2 | 18.04 | 3.0.0-3ubuntu2 | vulnerable |
| Ubuntu | python-pysaml2 | 18.04 | 4.0.2-0ubuntu2 | vulnerable |
| Ubuntu | python-pysaml2 | 18.04 | 4.0.2-0ubuntu3 | vulnerable |
| Ubuntu | python-pysaml2 | 18.04 | 4.0.2-0ubuntu3.1 | fixed |
| Opensuse | python-pysaml2 | tumbleweed | 7.4.2-1.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-pysaml2 | source | sid | 4.5.0-7 | not yet assigned | Not reported | [949322] |
| Debian | python-pysaml2 | source | forky | 4.5.0-7 | not yet assigned | Not reported | [949322] |
| Debian | python-pysaml2 | source | trixie | 4.5.0-7 | not yet assigned | Not reported | [949322] |
| Debian | python-pysaml2 | source | bookworm | 4.5.0-7 | not yet assigned | Not reported | [949322] |
| Opensuse | python-pysaml2 | rpm | tumbleweed | 7.5.4-1.1 | Not reported | OPENSUSE-SU-2026:11524-1 | Not reported |
| Ubuntu | python-pysaml2 | deb | 16.04 | 3.0.0-3ubuntu1.16.04.4 | Not reported | USN-4245-1 | Not reported |
| Ubuntu | python-pysaml2 | deb | 18.04 | 4.0.2-0ubuntu3.1 | Not reported | USN-4245-1 | Not reported |
| Ubuntu | python-pysaml2 | deb | 16.04 | 3.0.0-3ubuntu1.16.04.4 | Not reported | UBUNTU-CVE-2020-5390 | Not reported |
| Ubuntu | python-pysaml2 | deb | 18.04 | 4.0.2-0ubuntu3.1 | Not reported | UBUNTU-CVE-2020-5390 | Not reported |
| Opensuse | python-pysaml2 | rpm | tumbleweed | 7.4.2-1.2 | Not reported | OPENSUSE-SU-2024:14156-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [python313-pysaml2]Unknown
Source package: [python-pysaml2]
Details (1)
7.5.4-1.1· x86_64 · tumbleweedUnknown · Fixed:
7.4.2-1.2, 7.5.4-1.1Version impact unknown
dsa · python-pysaml2 · opensuse · tumbleweed
- [python314-pysaml2]Unknown
Source package: [python-pysaml2]
Details (1)
7.5.4-1.1· x86_64 · tumbleweedUnknown · Fixed:
7.4.2-1.2, 7.5.4-1.1Version impact unknown
dsa · python-pysaml2 · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [python3-pysaml2]Fixed
Source package: [python-pysaml2]
Details (2)
7.0.1-2· all · bookwormFixed · Fixed:
4.5.0-7dsa · python-pysaml2 · debian · bookworm; dsa · python-pysaml2 · debian · 12
7.0.1-2· all · bookwormFixed · Fixed:
4.5.0-7dsa · python-pysaml2 · debian · bookworm; dsa · python-pysaml2 · debian · 12
- [python-pysaml2-doc]Fixed
Source package: [python-pysaml2]
Details (2)
7.0.1-2· all · bookwormFixed · Fixed:
4.5.0-7dsa · python-pysaml2 · debian · bookworm; dsa · python-pysaml2 · debian · 12
7.0.1-2· all · bookwormFixed · Fixed:
4.5.0-7dsa · python-pysaml2 · debian · bookworm; dsa · python-pysaml2 · debian · 12
[Debian 13 (Trixie)]
- [python3-pysaml2]Fixed
Source package: [python-pysaml2]
Details (2)
7.5.0-4· all · trixieFixed · Fixed:
4.5.0-7dsa · python-pysaml2 · debian · 13
7.5.0-4· all · trixieFixed · Fixed:
4.5.0-7dsa · python-pysaml2 · debian · 13
- [python-pysaml2-doc]Fixed
Source package: [python-pysaml2]
Details (2)
7.5.0-4· all · trixieFixed · Fixed:
4.5.0-7dsa · python-pysaml2 · debian · 13
7.5.0-4· all · trixieFixed · Fixed:
4.5.0-7dsa · python-pysaml2 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11524-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-5390]
- [https://osv.dev/vulnerability/DLA-2119-1]
- [https://osv.dev/vulnerability/DSA-4630-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-5390]
- [https://osv.dev/vulnerability/USN-4245-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:14156-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11524-1]
- [https://security-tracker.debian.org/tracker/CVE-2020-5390]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]