Medium severity · published Oct 26, 2026
CVE-2026-116826
YesWiki before 4.7.0 Authenticated SSRF via Page Duplication API downloadFile
New
6.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
YE
yeswiki · YesWiki
before 4.7.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116826
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116826
github.com
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-qmpm-85pr-3qq8
www.vulncheck.com
https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-authenticated-ssrf-via-page-duplication-api-downloadfile
More from yeswiki
9.8
CVE-2026-46670
YesWiki: Unauthenticated SQL Injection
9.8
CVE-2026-52778
YesWiki has Unsafe eval() in Formula Calculator - Remote Code Execution (RCE) & Denial of Service (DoS)
9.8
CVE-2025-46348
YesWiki is a wiki system written in PHP
9.8
CVE-2025-46347
YesWiki is a wiki system written in PHP
9.8
CVE-2018-1000641
YesWiki version <= cercopitheque beta 1 contains a PHP Object Injection vulnerability in Unserialising user entered parameter in i18n.inc.php that can result in execution of code,…