What’s Vulnerable › Vulnerabilities

CVE-2026-104440: YesWiki before 4.6.7 Blind SSRF via bazarlist API idtypeannonce Parameter

• Severity: medium (CVSS 5.3 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 blind server-side request forgery vulnerability that allows unauthenticated attackers to make arbitrary server-side requests via the idtypeannonce parameter of /api/entries/bazarlist. Because isValidURL() always returns true, attackers can supply internal URLs fetched by curl in loadURLContent() to probe internal networks and reach internal services or metadata endpoints.

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-gw65-cpc7-hww6
• https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-blind-ssrf-via-bazarlist-api-idtypeannonce-parameter
• https://github.com/YesWiki/yeswiki/security/advisories/GHSA-gw65-cpc7-hww6

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