Description
pysaml2 version 4.4.0 and older accept any password when run with python optimizations enabled. This allows attackers to log in as any user without knowing their password.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | python-pysaml2 | 4.5.0-2 | — |
| Debian 13 | python-pysaml2 | 4.5.0-2 | — |
| Debian 12 | python-pysaml2 | 4.5.0-2 | — |
| Debian 9 | python-pysaml2 | 3.0.0-5+deb9u2 | DLA-2577-1 |
| Debian 8 | python-pysaml2 | 2.0.0-1+deb8u2 | DLA-1410-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | python-pysaml2 | 3.0.0-3ubuntu1.16.04.3 | USN-3520-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE OpenStack Cloud 7 | caasp-openstack-heat-templates | 1.0+git.1553079189.3bf8922-1.6.2 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | crowbar | 4.0+git.1551088848.823bcaa3-7.29.2 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | crowbar-core | 4.0+git.1556285635.ab602dd4d-9.46.3 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | crowbar-ha | 4.0+git.1556181005.47c643d-4.46.3 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | crowbar-openstack | 4.0+git.1554887450.ff7c30c1c-9.51.3 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | galera-python-clustercheck | 0.0+git.1506329536.8f5878c-1.6.2 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | openstack-ceilometer +1 | 7.1.1~dev4-4.15.3 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | openstack-heat-gbp | 5.1.1~dev1-2.6.3 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | python-PyKMIP | 0.5.0-3.3.3 | SUSE-SU-2019:1450-1 |
| SUSE OpenStack Cloud 7 | python-pysaml2 | 4.0.2-3.3.2 | SUSE-SU-2019:1450-1, SUSE-SU-2018:1194-1 |
| SUSE OpenStack Cloud 7 | rubygem-crowbar-client | 3.9.0-7.14.2 | SUSE-SU-2019:1450-1 |
| SUSE Enterprise Storage 4 | crowbar | 4.0+git.1551088848.823bcaa3-7.29.2 | SUSE-SU-2019:1450-1 |
| SUSE Enterprise Storage 4 | crowbar-core | 4.0+git.1556285635.ab602dd4d-9.46.3 | SUSE-SU-2019:1450-1 |
| SUSE Enterprise Storage 4 | rubygem-crowbar-client | 3.9.0-7.14.2 | SUSE-SU-2019:1450-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | pysaml2 | < 4.5.0 | 4.5.0 | GHSA-924m-4pmx-c67h |
Advisories 5
- DLA-2577-1 python-pysaml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1410-1 python-pysaml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3520-1 python-pysaml2 vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:1194-1 Security update for python-pysaml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1450-1 Security update for Cloud7 packages SUSE / openSUSE Security Updates · Feb 4, 2026