How to fix CVE-2025-66420?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

CVE-2025-66420

MEDIUM

2025-11-30 [email protected]

XSS

5.4

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch Released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 19:24 vuln.today

CVE Published

Nov 30, 2025 - 03:15 nvd

MEDIUM 5.4

DescriptionNVD

Tryton sao (aka tryton-sao) before 7.6.9 allows XSS via an HTML attachment. This is fixed in 7.6.9, 7.4.19, 7.0.38, and 6.0.67.

AnalysisAI

Tryton sao (aka tryton-sao) before 7.6.9 allows XSS via an HTML attachment. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Tryton sao (aka tryton-sao) before 7.6.9 allows XSS via an HTML attachment. This is fixed in 7.6.9, 7.4.19, 7.0.38, and 6.0.67. Version information: before 7.6.9.

Affected ProductsAI

See vendor advisory for affected versions.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

CVE-2025-66420 vulnerability details – vuln.today

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