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Fencer Vulns
medium 6.0

CVE-2006-6421 json

Cross-site scripting (XSS) vulnerability in the private message box implementation (privmsg.php) in phpBB 2.0.x allows remote authenticated…

published 2006-12-10 19 y ago modified 2026-06-16 4 mo ago also EUVD-2006-6404

cvss
6.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
16.1%
EPSS 16.1% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

Cross-site scripting (XSS) vulnerability in the private message box implementation (privmsg.php) in phpBB 2.0.x allows remote authenticated users to inject arbitrary web script or HTML via the "Message body" field in a message to a non-existent user.

Timeline

  1. Published
  2. First public exploit (EDB-29442)

Exploit prediction

16.08% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-29442 phpBB 2.0.21 - 'privmsg.php' HTML Injection webapps, 2007-01-11

CVSS scores

assigned by version score vector
NVD 2.0 6.0 AV:N/AC:M/Au:S/C:P/I:P/A:P

References

Sources

Fencer Vulns 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.