What is the CVSS score of CVE-2026-22355?

CVE-2026-22355 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-22355?

Within 24 hours: Identify all applications and systems using gregmolnar simple-xml-sitemap library and document their criticality and exposure. Within 7 days: Implement compensating controls including CSRF token validation, SameSite cookie attributes, and WAF rules to block suspicious sitemap modification requests; restrict sitemap functionality to internal networks where feasible. Within 30 days: Monitor vendor releases for available patches and establish a patching plan; consider alternative sitemap generation libraries if vendor patch timeline is unclear.

CVE-2026-22355

HIGH

Cross-Site Request Forgery (CSRF) (CWE-352)

2026-01-22 audit@patchstack.com

CSRF

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 22, 2026 - 17:16 nvd

HIGH 7.1

DescriptionCVE.org

Cross-Site Request Forgery (CSRF) vulnerability in gregmolnar Simple XML Sitemap simple-xml-sitemap allows Stored XSS.This issue affects Simple XML Sitemap: from n/a through <= 1.3.

AnalysisAI

gregmolnar Simple XML Sitemap simple-xml-sitemap is affected by cross-site request forgery (csrf) (CVSS 7.1).

Technical ContextAI

This vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affects gregmolnar Simple XML Sitemap simple-xml-sitemap. Cross-Site Request Forgery (CSRF) vulnerability in gregmolnar Simple XML Sitemap simple-xml-sitemap allows Stored XSS.This issue affects Simple XML Sitemap: from n/a through <= 1.3.

Affected ProductsAI

Product: gregmolnar Simple XML Sitemap simple-xml-sitemap.

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.