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CVE-2017-12869

25
FAUCET Score

CVE-2017-12869 describes an authentication bypass vulnerability in the multiauth module of SimpleSAMLphp versions 1.14.13 and earlier, affecting Debian Linux distributions. This flaw allows remote attackers to bypass authentication context restrictions and utilize authentication sources defined in config/authsources.php due to improper validation of user input. With a CVSS score of 7.5 (High), this vulnerability is network-exploitable with low attack complexity and no user interaction required, potentially leading to high integrity impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.14.13CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.35%
Probability of exploitation in next 30 days
EPSS Percentile
81.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0235 is in the 68th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa
Product: simplesamlphp/simplesamlphpFixed in: 1.14.14

Vendor Advisories (1)

composerGHSA-qc43-78vj-vg7phigh

SimpleSAMLphp Authentication context bypass in the multiauth module

May 14, 2022

References

lists.debian.org / debian-lts-announce/2017/12/msg00007.html
Mailing ListThird Party Advisory
simplesamlphp.org / security/201704-02
PatchVendor Advisory
debian.org / security/2018/dsa-4127
Third Party Advisory