CVE-2017-12869
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 2.37% probability · 84th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- simplesamlphp/simplesamlphp · debian/debian linux
- Source
- cve@mitre.org
EPSS 2.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://lists.debian.org/debian-lts-announce/2017/12/msg00007.htmlMailing List, Third Party Advisory
- https://simplesamlphp.org/security/201704-02Patch, Vendor Advisory
- https://www.debian.org/security/2018/dsa-4127Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00007.htmlMailing List, Third Party Advisory
- https://simplesamlphp.org/security/201704-02Patch, Vendor Advisory
- https://www.debian.org/security/2018/dsa-4127Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.