CVE-2005-3420
usercp_register.php in phpBB 2.0.17 allows remote attackers to modify regular expressions and...
usercp_register.php in phpBB 2.0.17 allows remote attackers to modify regular expressions and execute PHP code via the signature_bbcode_uid parameter, as demonstrated by injecting an "e" modifier into a preg_replace statement.
Exploit likelihood
What each source reports
NVD Score used
usercp_register.php in phpBB 2.0.17 allows remote attackers to modify regular expressions and execute PHP code via the signature_bbcode_uid parameter, as demonstrated by injecting an "e" modifier into a preg_replace statement.
- Record
CVE-2005-3420- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
usercp_register.php in phpBB 2.0.17 allows remote attackers to modify regular expressions and execute PHP code via the signature_bbcode_uid parameter, as demonstrated by injecting an "e" modifier into a preg_replace statement.
- Record
CVE-2005-3420- Updated
- 2026-11-02
EUVDEUVD-2005-3419 No score
usercp_register.php in phpBB 2.0.17 allows remote attackers to modify regular expressions and execute PHP code via the signature_bbcode_uid parameter, as demonstrated by injecting an "e" modifier into a preg_replace statement.
- Record
EUVD-2005-3419- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2g77-3x3p-6v8w No score
usercp_register.php in phpBB 2.0.17 allows remote attackers to modify regular expressions and...
usercp_register.php in phpBB 2.0.17 allows remote attackers to modify regular expressions and execute PHP code via the signature_bbcode_uid parameter, as demonstrated by injecting an "e" modifier into a preg_replace statement.
- Record
GHSA-2g77-3x3p-6v8w- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
phpbb2Debian:3.1 From an advisory covering 9 CVEs |
before 2.0.13+1-6sarge2, plus listed versions 2.0.13+1-62.0.13+1-6sarge1 |
2.0.13+1-6sarge2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2005-3420 is a high vulnerability (CVSS 7.5) in Phpbb Group Phpbb, published November 1, 2005. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.37%, the 83rd percentile. No source names a fixed version.