Administrator-session script execution via unsanitized token UID
Published Apr 18, 2025 · Updated Jul 5, 2026
Stored XSS in NodeBB 4.0.4 and earlier allows remote authenticated users to execute script in an administrator's browser. The token-creation backend accepts a crafted uid that bypasses numeric checks, stores it, and later renders it as active HTML on the API-tokens page. Creating the payload requires administrative access, and execution requires an administrator to revisit that page; the script then runs within that administrator's browser session.
Summary
What happened
Stored XSS in NodeBB 4.0.4 and earlier allows remote authenticated users to execute script in an administrator's browser. The token-creation backend accepts a crafted uid that bypasses numeric checks, stores it, and later renders it as active HTML on the API-tokens page. Creating the payload requires administrative access, and execution requires an administrator to revisit that page; the script then runs within that administrator's browser session.
The record
- CVE
- CVE-2025-29513
- Published
- Apr 18, 2025
- Updated
- Jul 5, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Apr 18, 2025CVE publishedPublication date reported by the CVE source.
- Jul 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Stored XSS in NodeBB Admin API token generatorproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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