Roundcube XSS chained with cookie tossing for full inbox access
aikido.dev | blog | #ai-security | #attack-chains | #web-security | #xss | #roundcube | #vulnerability-disclosure | #ai-pentesting | #session-hijacking | #csp-bypass | #webmail | #cookie-tossing
Summary
Aikido's AI pentesting agents found a stored XSS in Roundcube's display-attachment endpoint, chained with cookie tossing to hijack webmail sessions and accounts tied to that email. Fixed in 1.6.14.
- Published
- Collected
--- id: 2611 title: "Roundcube XSS chained with cookie tossing for full inbox access" source_domain: aikido.dev source_url: "https://www.aikido.dev/blog/roundcube-xss-cookie-tossing" published_at: "2026-04-21 00:00" tags: ["ai-security", "attack-chains", "web-security", "xss", "roundcube", "vulnerability-disclosure", "ai-pentesting", "session-hijacking", "csp-bypass", "webmail", "cookie-tossing"] phying_url: "https://phying.com/item/2611" lang: en --- # Roundcube XSS chained with cookie tossing for full inbox access ## Summary Aikido's AI pentesting agents found a stored XSS in Roundcube's display-attachment endpoint, chained with cookie tossing to hijack webmail sessions and accounts tied to that email. Fixed in 1.6.14. ## Intelligence Metadata - **Sources:** aikido.dev - **Published:** 2026-04-21 00:00 - **Original:** https://www.aikido.dev/blog/roundcube-xss-cookie-tossing - **Phying News:** https://phying.com/item/2611