CVE-2026-104467: YesWiki authorization bypass in public API mode

CVE-2026-104467 · Severity: high · CVSS 8.1 · Published 2026-10-02

YesWiki is a collaborative wiki platform that stores website content and configuration. When public API mode is enabled (a documented feature), unauthenticated attackers can bypass authorization checks and access admin-only functions. This allows attackers to modify configuration, access database backups, delete archives, and change CSS settings without any authentication.

Technologies: YesWiki. Vendors: YesWiki.

Quick answers

Is CVE-2026-104467 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-104467 being exploited in the wild.
How severe is CVE-2026-104467?
High severity, with a CVSS score of 8.1, published 2 October 2026.
Which products and versions are affected?
YesWiki before 4.6.7.
Is there a fix for CVE-2026-104467?
Yes: fixed in 4.6.7. Until then: Disable public API mode by removing or setting 'api_allowed_keys' => ['public' => true] from configuration until upgrading. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-104467 attacked?
It is attacked over the network.
Am I affected by CVE-2026-104467?
Check whether you run YesWiki at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 4.6.7

Disable public API mode by removing or setting 'api_allowed_keys' => ['public' => true] from configuration until upgrading.

Technical details

An authorization bypass flaw in ApiService::isAuthorized() permits unauthenticated API calls to routes marked with @admins ACL when public API mode is configured with 'api_allowed_keys' => ['public' => true]. The check grants access based on the public mode flag without validating that the specific route ACL includes public access, bypassing controller-level authorization. Affected endpoints include /api/ci/update_config (configuration mutation), /api/archives/* (backup management), and /api/templates/custom-presets/* (CSS deletion).

Affected products

  • YesWiki YesWiki before 4.6.7

Timeline

  • 2026-09-01: disclosed
  • 2026-10-02: advisory

References

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