SSRF in Yeswiki
CVE-2026-116826
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/YesWiki/yeswiki/security/advisories/GHSA-qmpm-85pr-3qq8 (vendor-advisory)
- www.vulncheck.com/advisories/yeswiki-before-4.7.0-authenticated-ssrf-via-page-d… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116826?
- CVE-2026-116826 is a medium-severity vulnerability in Yeswiki, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-10-27.
- How severe is CVE-2026-116826?
- Medium severity. CVSS v3 base score is 6.8 out of 10.