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Fencer Vulns
critical 9.3

CVE-2007-3963 json

Multiple cross-site scripting (XSS) vulnerabilities in UseBB 1.0.7, and possibly other 1.0.x versions, allow remote attackers to inject arb…

published 2007-07-25 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3947

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
2
Exploit-DB

Summary

Multiple cross-site scripting (XSS) vulnerabilities in UseBB 1.0.7, and possibly other 1.0.x versions, allow remote attackers to inject arbitrary web script or HTML via the PATH_INFO (PHP_SELF) to (1) upgrade-0-2-3.php, (2) upgrade-0-3.php, or (3) upgrade-0-4.php in install/, a different vulnerability than CVE-2005-4193.

Timeline

  1. First public exploit (EDB-30324)
  2. Published

Exploit prediction

2.42% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-30324 UseBB 1.0.7 - '/install/upgrade-0-3.php?PHP_SELF' Cross-Site Scripting webapps, 2007-07-20
  • EDB-30323 UseBB 1.0.7 - '/install/upgrade-0-2-3.php?PHP_SELF' Cross-Site Scripting webapps, 2007-07-20

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

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.