What’s Vulnerable › Vulnerabilities

CVE-2026-104442: YesWiki before 4.6.7 Unauthenticated SSRF via syndication Action

• Severity: medium (CVSS 5.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-02 · updated 2026-10-02
• Weakness: CWE-918

Description

YesWiki before 4.6.7 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server fetch arbitrary URLs by supplying a syndication action through the render handler's content parameter. Attackers can target internal hosts and ports, read back fetched feed content in the rendered page, and cause feed enclosures to be downloaded into the files directory.

Affected products

• yeswiki: before 4.6.7 — fixed in 4.6.7

How to fix

Upgrade to a fixed version: yeswiki 4.6.7. Check the vendor advisory for mitigations.

References

• https://github.com/YesWiki/yeswiki/security/advisories/GHSA-jwh5-j4f4-c6xp
• https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unauthenticated-ssrf-via-syndication-action
• https://github.com/YesWiki/yeswiki/security/advisories/GHSA-jwh5-j4f4-c6xp

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