Description
The multiauth module in SimpleSAMLphp 1.14.13 and earlier allows remote attackers to bypass authentication context restrictions and use an authentication source defined in config/authsources.php via vectors related to improper validation of user input.
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 | simplesamlphp | 1.14.15-1 | — |
| Debian 12 | simplesamlphp | 1.14.15-1 | — |
| Debian 9 | simplesamlphp | 1.14.11-1+deb9u1 | DSA-4127-1 |
| Debian 8 | simplesamlphp | 1.13.1-2+deb8u1 | DSA-4127-1 |
| Debian 7 | simplesamlphp | 1.9.2-1+deb7u1 | DLA-1205-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | simplesamlphp | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | simplesamlphp/simplesamlphp | < 1.14.14 | 1.14.14 | GHSA-qc43-78vj-vg7p |
Advisories 2
- DSA-4127-1 simplesamlphp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1205-1 simplesamlphp - security update Debian Security (DSA / DLA) · Mar 9, 2026