viewtopic.php in phpBB 2.x before 2.0.11 improperly URL decodes the highlight parameter when extracting words and phrases to highlight, which allows remote attackers to execute arbitrary PHP code by double-encoding the highlight value so that special characters are inserted into the result, which is then processed by PHP exec, as exploited by the Santy.A worm
Published Dec 31, 2004
7.5
HIGHCVSS 2.0
EPSS 72.10%
Description
viewtopic.php in phpBB 2.x before 2.0.11 improperly URL decodes the highlight parameter when extracting words and phrases to highlight, which allows remote attackers to execute arbitrary PHP code by double-encoding the highlight value so that special characters are inserted into the result, which is then processed by PHP exec, as exploited by the Santy.A worm.
Affected products
No data.
- n/a
- 1.0.0
- 1.0.1
- 1.2.0
- 1.2.1
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.4
- 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_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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 72.10% (0.72096) | 99.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 71.90% (0.71903) | 99.35th | v5 (v2026.06.15) |
| Mar 17, 2025 | 85.91% (0.85909) | 99.35th | v4 (v2025.03.14) |
| Jan 15, 2025 | 89.51% (0.89506) | 99.03th | v3 (v2023.03.01) |
| Dec 17, 2024 | 92.51% (0.92505) | 99.23th | v3 (v2023.03.01) |
| Dec 8, 2023 | 96.27% (0.96267) | 99.40th | v3 (v2023.03.01) |
| Apr 22, 2023 | 96.59% (0.96590) | 99.35th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.51% (0.96513) | 99.27th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.57% (0.12567) | 95.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.57% (0.12567) | 95.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.57% (0.12567) | 90.03th | v2 (v2022.01.01) |
No CWE recorded.
References (11)
- http://marc.info/?l=bugtraq&m=110029415208724&w=2 mailing-listx_refsource_BUGTRAQ
- http://marc.info/?l=bugtraq&m=110365752909029&w=2 mailing-listx_refsource_BUGTRAQ
- http://marc.info/?t=110079440800004&r=1&w=2 mailing-listx_refsource_BUGTRAQ
- http://secunia.com/advisories/13239/ third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://www.kb.cert.org/vuls/id/497400 third-party-advisoryx_refsource_CERT-VNPatchThird Party AdvisoryUS Government Resource
- http://www.phpbb.com/phpBB/viewtopic.php?t=240513 x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/archive/1/385208 mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/10701 vdb-entryx_refsource_BID
- http://www.us-cert.gov/cas/techalerts/TA04-356A.html third-party-advisoryx_refsource_CERTPatchThird Party AdvisoryUS Government Resource
- https://exchange.xforce.ibmcloud.com/vulnerabilities/18052 vdb-entryx_refsource_XF
- https://security.gentoo.org/glsa/200411-32 vendor-advisoryx_refsource_GENTOO
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=bugtraq&m=110029415208724&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://marc.info/?l=bugtraq&m=110365752909029&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://marc.info/?t=110079440800004&r=1&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://secunia.com/advisories/13239/ | third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory | |
| http://www.kb.cert.org/vuls/id/497400 | third-party-advisoryx_refsource_CERT-VNPatchThird Party AdvisoryUS Government Resource | |
| http://www.phpbb.com/phpBB/viewtopic.php?t=240513 | x_refsource_CONFIRMVendor Advisory | |
| http://www.securityfocus.com/archive/1/385208 | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/10701 | vdb-entryx_refsource_BID | |
| http://www.us-cert.gov/cas/techalerts/TA04-356A.html | third-party-advisoryx_refsource_CERTPatchThird Party AdvisoryUS Government Resource | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/18052 | vdb-entryx_refsource_XF | |
| https://security.gentoo.org/glsa/200411-32 | vendor-advisoryx_refsource_GENTOO |
Change history (0)
No recorded changes yet.