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Fencer Intel
medium 6.1

CVE-2015-3296 json

NodeBB Cross-site Scripting Vulnerability in Markdown Processing

published 2017-09-21 9 y ago modified 2026-09-10 1 mo ago also GHSA-9g4f-5rpg-4948 , EUVD-2022-3370

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

Multiple cross-site scripting (XSS) vulnerabilities in NodeBB before 0.7 allow remote attackers to inject arbitrary web script or HTML via vectors related to (1) javascript: or (2) data: URLs.

Patch / fix

Exploit prediction

1.26% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm nodebb
<0.70
0.70
npm nodebb-plugin-markdown
<5.1.1
5.1.1

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.