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Fencer Intel
medium 4.8

CVE-2020-13487 json

bbPress stored Cross-Site Scripting (XSS) vulnerability in the Forum creation section

published 6y ago modified 4mo ago also EUVD-2022-4737 , GHSA-p9xp-xghp-gqvp

cvss
4.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

The bbPress plugin through 2.6.4 for WordPress has stored XSS in the Forum creation section, resulting in JavaScript execution at wp-admin/edit.php?post_type=forum (aka the Forum listing page) for all users. An administrator can exploit this at the wp-admin/post.php?action=edit URI.

Is CVE-2020-13487 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • youtube.com https://www.youtube.com/watch?v=3rXP8CGTe08 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
GitHub 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected packages

ecosystem package affected fixed in
packagist bbpress/bbpress
<=2.6.4
 no fix listed

Classification

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

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.