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CVE-2026-102333
MEDIUM6.1
Published 2026-09-28 · Updated 2026-09-29 · Source disclosure@vulncheck.com
Description
httpdbg before 2.2.1 fails to validate URL schemes in recorded HTTP request URLs rendered as clickable links in the web interface. Attackers controlling traffic recorded by httpdbg can supply javascript: scheme URLs that execute malicious scripts in the application origin when clicked, allowing access to captured request and response data including headers and tokens.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-79
References
- https://github.com/cle-b/httpdbg
- https://github.com/cle-b/httpdbg/blob/v2.2.0/httpdbg/hooks/recordhttp2.py#L88-L97
- https://github.com/cle-b/httpdbg/blob/v2.2.0/httpdbg/webapp/static/index.htm#L302
- https://github.com/cle-b/httpdbg/commit/121845b41c19ddaf30b51be0797bc2ff4847d8b3
- https://github.com/cle-b/httpdbg/issues/220
- https://github.com/cle-b/httpdbg/pull/222
- https://github.com/cle-b/httpdbg/releases/tag/v2.2.1
- https://www.vulncheck.com/advisories/httpdbg-before-2.2.1-stored-cross-site-scripting-via-javascript-url