CVE-2017-12869 json
SimpleSAMLphp Authentication context bypass in the multiauth module
published 2017-09-01 9 y ago modified 2026-06-17 4 mo ago also GHSA-qc43-78vj-vg7p , EUVD-2022-4943
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist simplesamlphp/simplesamlphp 1.14.14
- simplesamlphp Debian 14, Debian 12 1.14.15-1
debian advisories DEBIAN-CVE-2017-12869
- simplesamlphp.org/security/201704-02 advisory
Exploit prediction
2.37% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| GitHub | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | simplesamlphp/simplesamlphp | <1.14.14 |
1.14.14 |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
simplesamlphp.org
/security/201704-02
web, patch, vendor-advisory
-
debian.org
/security/2018/dsa-4127
vendor-advisory, web, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2017/12/msg00007.html
mailing-list, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2017-12869
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12869.yaml
web
-
github.com
/simplesamlphp/simplesamlphp
package
-
github.com
/simplesamlphp/simplesamlphp/blob/de98fc5bb663feea16686ae77958f759b4a7638d/docs/simplesamlphp-changelog-1.x.md
web
Sources
- CVE List CVE-2017-12869
- GitHub Advisory GHSA-qc43-78vj-vg7p
- NVD CVE-2017-12869
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.