SimpleSAMLphp Authentication context bypass in the multiauth module
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | simplesamlphp/simplesamlphp | < 1.14.14 | 1.14.14 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2017-12869
- https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12869.yaml
- https://github.com/simplesamlphp/simplesamlphp
- https://github.com/simplesamlphp/simplesamlphp/blob/de98fc5bb663feea16686ae77958f759b4a7638d/docs/simplesamlphp-changelog-1.x.md?plain=1#L902C64-L902C79
- https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
- https://simplesamlphp.org/security/201704-02
- https://www.debian.org/security/2018/dsa-4127
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N- Weakness (CWE)
CWE-20- Platform
- Composer
- Package
simplesamlphp/simplesamlphp- Disclosed
- 14.05.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-qc43-78vj-vg7p - CC BY 4.0
Vulnerability history: simplesamlphp/simplesamlphp
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 23
- First → latest
- 01.2020 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 3
- High 4
- Medium 12
- Low 4
Disclosures per year
- 2020: 6
- 2021: 0
- 2022: 12
- 2023: 0
- 2024: 4
- 2025: 0
- 2026: 1
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SimpleSAMLphp Authentication context bypass in the multiauth module this entry
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