Wiki Js
CVE-2021-25993
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 5.4 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, user interaction required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. |
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Alert meAnalysisAI
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. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
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. 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 products include: Requarks Wiki.Js.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)NVD
Authorization bypass in Wiki.js through 2.5.314 allows an authenticated user who has been granted access to at least one
Authentication Bypass Using an Alternate Path or Channel in GitHub repository requarks/wiki prior to 2.5.281. Rated high
Server-side request forgery in Wiki.js through 2.5.314 lets an authenticated user who holds page-editing permissions for
Wiki.js is a wiki app built on Node.js. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, lo
Wiki.js is a wiki app built on node.js. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, lo
Wiki.js an open-source wiki app built on Node.js. Rated medium severity (CVSS 5.4), this vulnerability is remotely explo
Tag-based page access restrictions in Wiki.js through 2.5.314 are bypassed because several GraphQL resolvers return page
Wiki.js is a wiki app built on Node.js. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no a
In Wiki.js before version 2.5.151, directory traversal outside of Wiki.js context is possible when a storage module with
Wiki.js is a wiki app built on Node.js. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, lo
In Wiki.js before 2.4.107, there is a stored cross-site scripting through template injection. Rated medium severity (CVS
Wiki.js is a wiki app built on Node.js. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, lo
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