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Fencer Intel
high 8.6

CVE-2025-31131 json

Path Traversal allowing arbitrary read of files in Yeswiki

published last yr. modified 4mo ago also EUVD-2025-9333 , GHSA-w34w-fvp3-68xm

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
5.6%
EPSS 5.6% chance of exploitation in 30 days, percentile 92%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

YesWiki is a wiki system written in PHP. The squelette parameter is vulnerable to path traversal attacks, enabling read access to arbitrary files on the server. This vulnerability is fixed in 4.5.2.

Patch / fix

  • packagist yeswiki/yeswiki 4.5.2
  • yeswiki yeswiki 4.5.2

Is CVE-2025-31131 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. Published
  2. First public exploit (EDB-52135)

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

5.58% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-52135 YesWiki 4.5.1 - Unauthenticated Path Traversal webapps, 2025-04-07
  • Nuclei template Yeswiki < 4.5.2 - Unauthenticated Path Traversal nuclei detection template
  • github.com https://github.com/YesWiki/yeswiki/security/advisories/GHSA-w34w-fvp3-68xm referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
GitHub 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
packagist yeswiki/yeswiki
<4.5.2
4.5.2

Affected products

  • YesWiki yeswiki

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Intel 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.