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
Published Nov 1, 2005
7.5
HIGHCVSS 2.0
EPSS 2.37%
Description
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.
Affected products
No data.
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.0.6
- 2.0.6c
- 2.0.6d
- 2.0.7
- 2.0.7a
- 2.0.8
- 2.0.8a
- 2.0.9
- 2.0.10
- 2.0.11
- 2.0.12
- 2.0.13
- 2.0.14
- 2.0.15
- 2.0.16
- 2.0.17
- 2.0_beta1
- 2.0_rc1
- 2.0_rc2
- 2.0_rc3
- 2.0_rc4
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.37% (0.02367) | 83.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.37% (0.02367) | 81.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.32% (0.02323) | 83.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.64% (0.01635) | 88.04th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.54% (0.02545) | 88.52th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
No CWE recorded.
References (10)
- http://marc.info/?l=bugtraq&m=113081113317600&w=2 mailing-listx_refsource_BUGTRAQ
- http://secunia.com/advisories/17366 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/18098 third-party-advisoryx_refsource_SECUNIA
- http://securityreason.com/securityalert/130 third-party-advisoryx_refsource_SREASON
- http://securitytracker.com/id?1015121 vdb-entryx_refsource_SECTRACKPatchVendor Advisory
- http://www.debian.org/security/2005/dsa-925 vendor-advisoryx_refsource_DEBIAN
- http://www.hardened-php.net/advisory_172005.75.html x_refsource_MISCPatchVendor Advisory
- http://www.osvdb.org/20391 vdb-entryx_refsource_OSVDBPatch
- http://www.securityfocus.com/bid/15243 vdb-entryx_refsource_BIDPatch
- http://www.vupen.com/english/advisories/2005/2250 vdb-entryx_refsource_VUPEN
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=bugtraq&m=113081113317600&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://secunia.com/advisories/17366 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/18098 | third-party-advisoryx_refsource_SECUNIA | |
| http://securityreason.com/securityalert/130 | third-party-advisoryx_refsource_SREASON | |
| http://securitytracker.com/id?1015121 | vdb-entryx_refsource_SECTRACKPatchVendor Advisory | |
| http://www.debian.org/security/2005/dsa-925 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.hardened-php.net/advisory_172005.75.html | x_refsource_MISCPatchVendor Advisory | |
| http://www.osvdb.org/20391 | vdb-entryx_refsource_OSVDBPatch | |
| http://www.securityfocus.com/bid/15243 | vdb-entryx_refsource_BIDPatch | |
| http://www.vupen.com/english/advisories/2005/2250 | vdb-entryx_refsource_VUPEN |
Change history (0)
No recorded changes yet.