VulnerabilityAnalyzed

CVE-2025-46348

The archives are created with a predictable filename, so a malicious user could create and download an archive without being authenticated.

CRITICAL 9.8EPSS 0.63%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

YesWiki is a wiki system written in PHP. Prior to version 4.5.4, the request to commence a site backup can be performed and downloaded without authentication. The archives are created with a predictable filename, so a malicious user could create and download an archive without being authenticated. This could result in a malicious attacker making numerous requests to create archives and fill up the file system, or by downloading the archive which contains sensitive site information. This issue has been patched in version 4.5.4.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.63% probability · 48th percentile
CISA KEV: Not listed
Weakness: CWE-287, CWE-862
Affected: yeswiki/yeswiki
Source: security-advisories@github.com

References

https://github.com/YesWiki/yeswiki/commit/0d4efc880a727599fa4f6d7a64cc967afe475530Patch
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-wc9g-6j9w-hr95Exploit, Vendor Advisory
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-wc9g-6j9w-hr95Exploit, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.