CVE-2026-44502 (GCVE-0-2026-44502)
Vulnerability from cvelistv5 – Published: 2026-05-26 16:13 – Updated: 2026-05-27 17:21
VLAI
EPSS
VEX
Title
Bugsink: SSRF bypass in `validate_webhook_url`
Summary
Bugsink is a self-hosted error tracking tool. Prior to 2.1.3, Bugsink’s webhook URL validation could be (partially) bypassed because of a mismatch in URL parsing. The original validation logic parsed webhook URLs with Python’s urllib.parse.urlparse, then sent the request with requests.post. For malformed inputs involving backslashes and @, those components can disagree about where the authority ends and which hostname is the real target. A URL may therefore appear to target an allowlisted public hostname during validation, while the HTTP client actually connects to a different host. This vulnerability is fixed in 2.1.3.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 17:21 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/bugsink/bugsink/security/advis… | x_refsource_CONFIRM |
| https://github.com/bugsink/bugsink/commit/940d2df… | x_refsource_MISC |
| https://github.com/bugsink/bugsink/releases/tag/2.1.3 | x_refsource_MISC |
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