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.
Published: 2026-10-30
Score: 7.4 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 30 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
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.
Title Mythic 3.2.16 through 3.4.0.61 Stored XSS via Agent-Downloaded File Preview
First Time appeared Its-a-feature
Its-a-feature mythic
Weaknesses CWE-79
CPEs cpe:2.3:a:its-a-feature:mythic:*:*:*:*:*:*:*:*
Vendors & Products Its-a-feature
Its-a-feature mythic
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 7.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

Its-a-feature Mythic
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-30T17:19:55.892Z

Reserved: 2026-10-30T15:36:24.107Z

Link: CVE-2026-119764

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-30T18:17:27.273

Modified: 2026-10-30T18:17:27.273

Link: CVE-2026-119764

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')