HIGHCVSS v3.1 8.7Vulnerability
CVE-2026-126800
Hydro @hydrooj/ui-default before 4.59.1 contains a stored cross-site scripting vulnerability that allows registered users to inject script by placing double quotes in language- class tokens within markdown-it-xss.ts. Attackers can store a payload in their profile bio that executes when administrators or other users view it, stealing the non-httpOnly sid session cookie for session hijacking.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-11T23:49:45.533241+00:00
- Cvss severity
- HIGH
- Cvss score
- 8.7
- Retrieved at
- 2026-11-11T23:50:18+00:00
- Score
- 8.7
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-126800
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- First seen by Signal
- 2026-11-11T23:46:41+00:00
- Name
- CVE-2026-126800
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- Published at
- 2026-11-11T21:16:43.507
- Last modified
- 2026-11-11T21:16:43.507
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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