Vulnerability Description
Mythic 3.2.16 through 3.4.0.61 contains a stored cross-site scripting vulnerability that allows attackers controlling target endpoint files to run JavaScript in the Mythic UI origin by planting HTML in .pdf-named files. When an operator downloads the file and clicks Preview Media, content-sniffed HTML from /direct/view renders same-origin, stealing localStorage JWTs for full GraphQL and REST access.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/h00die/mythic_xss
- https://github.com/its-a-feature/Mythic
- https://github.com/its-a-feature/Mythic/blob/33a46d7db7e237458d7e20e7d3cfefef811
- https://github.com/its-a-feature/Mythic/commit/f06b3ed2d1de6577744cc0b3146966c62
- https://www.vulncheck.com/advisories/mythic-3.2.16-through-3.4.0.61-stored-xss-v
FAQ
What is CVE-2026-119764?
CVE-2026-119764 is a vulnerability with a CVSS score of 6.8 (MEDIUM). Mythic 3.2.16 through 3.4.0.61 contains a stored cross-site scripting vulnerability that allows attackers controlling target endpoint files to run JavaScript in the Mythic UI origin by planting HTML i...
How severe is CVE-2026-119764?
CVE-2026-119764 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119764?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.