What’s Vulnerable › Vulnerabilities

CVE-2026-104464: YesWiki before 4.6.7 SSRF via Bazar abonnements sync actor parameter

• Severity: high (CVSS 8.6 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 a server-side request forgery vulnerability that allows unauthenticated attackers to make server-side GET requests by supplying an unvalidated actor URL to the Bazar abonnements sync action. Attackers can target internal hosts or cloud metadata endpoints and chain attacker-controlled outbox first/next links, with fetched responses stored as readable Bazar entries.

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-wcjp-v62j-p5xm
• https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-ssrf-via-bazar-abonnements-sync-actor-parameter
• https://github.com/YesWiki/yeswiki/security/advisories/GHSA-wcjp-v62j-p5xm

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