CVE-2021-25993

Requarks wiki.js - Stored Cross-Site Scripting (XSS) in markdown editor

MEDIUM
5.4
CVSS Score
Published: December 29, 2021 at 04:50 PM UTC
Updated: June 17, 2026 at 03:42 AM UTC
1 product affected across 1 vendorWiki.js

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.6%
SSVC
PoC

Description

In Requarks wiki.js, versions 2.0.0-beta.147 to 2.5.255 are affected by Stored XSS vulnerability, where a low privileged (editor) user can upload a SVG file that contains malicious JavaScript while uploading assets in the page. That will send the JWT tokens to the attacker’s server and will lead to account takeover when accessed by the victim.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMMend
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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