CVE-2026-104467: YesWiki before 4.6.7 Authorization Bypass via Public API Mode

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% 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-862

Description

YesWiki before 4.6.7 contains an authorization bypass vulnerability in ApiService::isAuthorized() that allows unauthenticated attackers to call admin-only API routes when public API mode is enabled. Attackers can send requests to endpoints like api/ci/update_config and api/archives to overwrite configuration and list, download, or delete backup archives.

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-v527-6r4j-j2w2
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-authorization-bypass-via-public-api-mode
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-v527-6r4j-j2w2

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