Server-side Request Forgery (SSRF) Affecting yeswiki/yeswiki package, versions >=4.6.2, <4.6.6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-YESWIKIYESWIKI-17913408
- published9 Jul 2026
- disclosed9 Jul 2026
- creditUnknown
Introduced: 9 Jul 2026
CVE-2026-52769 (opens in a new tab)How to fix?
Upgrade yeswiki/yeswiki to version 4.6.6 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the verifySignature process. An attacker can cause the server to initiate arbitrary outbound HTTP requests to internal or external hosts by supplying a crafted Signature.keyId header, potentially allowing access to sensitive internal resources, cloud metadata endpoints, or administrative interfaces, and enabling information gathering through timing and error responses. This is only exploitable if ActivityPub is enabled on at least one Bazar form.