CVE-2026-129158

MEDIUM 5.4

ragent 1.1.0 Stored XSS via SVG Knowledge-Base Document Upload

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

ragent 1.1.0 contains a stored cross-site scripting vulnerability that allows authenticated users to inject scripts by uploading SVG knowledge-base documents served inline as image/svg+xml. Attackers can upload a script-bearing SVG via /knowledge-base/{kb-id}/docs/upload so that victims opening /knowledge-base/docs/{docId}/file execute it in the application origin, enabling account takeover.

CWE	CWE-79
Vendor	nageoffer
Product	ragent
Published	Nov 13, 2026

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CVSS v3 Breakdown

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

Affected Versions

nageoffer / ragent

1.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vul.yulun.ac.cn: https://vul.yulun.ac.cn/20261104/ragent/ github.com: https://github.com/nageoffer/ragent/issues/187 github.com: https://github.com/nageoffer/ragent/blob/f64de341452c8998ebf64cd264e60ccad6a31631/bootstrap/src/main/java/com/nageoffer/ai/ragent/knowledge/controller/KnowledgeDocumentController.java#L71-L82 github.com: https://github.com/nageoffer/ragent/blob/f64de341452c8998ebf64cd264e60ccad6a31631/bootstrap/src/main/java/com/nageoffer/ai/ragent/knowledge/controller/KnowledgeDocumentController.java#L187-L198 vulncheck.com: https://www.vulncheck.com/advisories/ragent-1.1.0-stored-xss-via-svg-knowledge-base-document-upload

Credits

Wu Yulun