CVE-2021-3137

MEDIUM

XWiki < 12.10.3 - Stored Cross-Site Scripting via SVG Upload in Comment Section

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-3137. PoCs published by Karan Keswani.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in XWiki CMS 12.10.2 via SVG file upload in the comment section. The payload triggers when a victim views the uploaded SVG file.

Description

XWiki 12.10.2 allows XSS via an SVG document to the upload feature of the comment section.

Exploits (1)

exploitdb WORKING POC
by Karan Keswani · textwebappsmultiple
https://www.exploit-db.com/exploits/49437

This exploit demonstrates a stored XSS vulnerability in XWiki CMS 12.10.2 via SVG file upload in the comment section. The payload triggers when a victim views the uploaded SVG file.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: XWiki CMS 12.10.2
Auth required
Prerequisites: Valid user accounts (attacker and victim) · Access to the comment section with upload functionality
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/49437

Scores

CVSS v3 5.4
EPSS 0.0015
EPSS Percentile 35.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (2)
org.xwiki.commons/xwiki-commons 0 - 12.10.3Maven
xwiki/xwiki 12.10.2
Published Jan 20, 2021
Tracked Since Feb 18, 2026