Vulnerability · Published Oct 26, 2026 · Assigned by VulnCheck

CVE-2026-116826YesWiki before 4.7.0 Authenticated SSRF via Page Duplication API downloadFile

Medium 6.8

In plain English

A medium-severity server-side request forgery in yeswiki from YesWiki. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)6.8Medium

Exploit odds (30 days)0.2%top 84.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

YesWiki before 4.7.0 contains a server-side request forgery vulnerability in DuplicationManager::downloadFile() that allows authenticated administrators to make arbitrary outbound requests via the files array. Attackers can POST file:// or internal URLs to /api/pages/{tag}/duplicate, storing local files, cloud metadata, or database credentials in the publicly accessible files/ directory.

Affected products (as reported)

Vendor	Product	Versions
YesWiki	yeswiki	0 – before 4.7.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-qmpm-85pr-3qq8) vendor-advisory
VulnCheck Advisory: YesWiki before 4.7.0 Authenticated SSRF via Page Duplication API downloadFile third-party-advisory