CVE-2026-102333

Summary

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.

Affected Software

Weaknesses

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

• https://github.com/cle-b/httpdbg/issues/220
• https://github.com/cle-b/httpdbg/pull/222
• https://github.com/cle-b/httpdbg/commit/121845b41c19ddaf30b51be0797bc2ff4847d8b3
• https://github.com/cle-b/httpdbg/releases/tag/v2.2.1
• https://github.com/cle-b/httpdbg/blob/v2.2.0/httpdbg/webapp/static/index.htm#L302
• https://github.com/cle-b/httpdbg/blob/v2.2.0/httpdbg/hooks/recordhttp2.py#L88-L97
• https://github.com/cle-b/httpdbg
• https://www.vulncheck.com/advisories/httpdbg-before-2.2.1-stored-cross-site-scripting-via-javascript-url

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