What is CVE-2025-29513?

CVE-2025-29513 is a medium-severity vulnerability in Nodebb, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-04-18.

How severe is CVE-2025-29513?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Nodebb

CVE-2025-29513

Cross-Site Scripting (XSS) vulnerability in NodeBB v4.0.4 and before allows remote attackers to store arbitrary code in the admin API Access token generator.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-04-18 · last modified 2026-07-05.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.428 (98.7th percentile), scored 2026-09-28.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.415 · newest: 0.428 · change: +0.014

Affected products

Nodebb

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

nodebb.com (Product)
www.tonysec.com/posts/cve-2025-29513/ (Third Party Advisory)

Frequently asked questions

What is CVE-2025-29513?: CVE-2025-29513 is a medium-severity vulnerability in Nodebb, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-04-18.
How severe is CVE-2025-29513?: Medium severity. CVSS v3 base score is 6.1 out of 10.