CVE-2026-116205 Details
Description
YesWiki before 4.7.0 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to fetch arbitrary URLs by supplying [[|URL]] wiki syntax to the render handler. Attackers can pass the syntax in the content parameter of the page render handler to reach internal hosts and ports and read their responses.
A server-side request forgery (SSRF) vulnerability has been identified in YesWiki versions prior to 4.7.0. This vulnerability allows unauthenticated remote attackers to fetch arbitrary URLs by using the '[[|URL]]' wiki syntax in the content parameter of the page render handler. The vulnerability can be exploited to access internal hosts and ports, reading their responses. The issue arises because the 'render' gateway does not validate the scheme, host, or IP of the URLs, and the same pre-authentication access point has been previously addressed in other advisories.
Users are advised to update YesWiki to version 4.7.0 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 25, 2026CISA-ADP
Assessed Oct 29, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x9j5-r988-9jcc | CISA-ADP | AdvisoryExploitVendor |
| https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x9j5-r988-9jcc | [email protected] | AdvisoryExploitVendor |
| https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-unauthenticated-ssrf-via-url-raw-inclusion-syntax | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| YesWiki | < 4.7.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 29, 2026 | CVE Modified | CISA-ADP |
| Oct 25, 2026 | New CVE Received | [email protected] |