phpBB 2.0.21 does not properly handle pathnames ending in %00, which allows remote authenticated administrative users to upload arbitrary files, as demonstrated by a query to admin/admin_board.php with an avatar_path parameter ending in .php%00
Published Sep 13, 2006
4.6
MEDIUMCVSS 2.0
EPSS 1.64%
Description
phpBB 2.0.21 does not properly handle pathnames ending in %00, which allows remote authenticated administrative users to upload arbitrary files, as demonstrated by a query to admin/admin_board.php with an avatar_path parameter ending in .php%00.
Affected products
No data.
- 2.0.21
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:H/Au:S/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 2, 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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.64% (0.01639) | 75.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.58% (0.01584) | 72.29th | v5 (v2026.06.15) |
| Oct 7, 2025 | 2.84% (0.02839) | 85.71th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.79% (0.01793) | 81.54th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.56% (0.00556) | 78.36th | v3 (v2023.03.01) |
| Mar 8, 2024 | 0.56% (0.00558) | 77.13th | v3 (v2023.03.01) |
| Dec 18, 2023 | 0.56% (0.00558) | 75.13th | v3 (v2023.03.01) |
| Aug 25, 2023 | 0.40% (0.00400) | 70.29th | v3 (v2023.03.01) |
| Jul 18, 2023 | 0.42% (0.00424) | 70.90th | v3 (v2023.03.01) |
| Jun 10, 2023 | 0.45% (0.00446) | 71.37th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.79% (0.00790) | 78.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.63% (0.01633) | 75.91th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.63% (0.01633) | 75.87th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.63% (0.01633) | 73.81th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.63% (0.01633) | 52.70th | v2 (v2022.01.01) |
No CWE recorded.
References (10)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=388120 x_refsource_CONFIRM
- http://secunia.com/advisories/22188 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/28871 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2008/dsa-1488 vendor-advisoryx_refsource_DEBIAN
- http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=489624 x_refsource_MISC
- http://www.security.nnov.ru/Odocument221.html x_refsource_MISCExploit
- http://www.securityfocus.com/archive/1/445788/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/20347 vdb-entryx_refsource_BID
- http://www.securityfocus.com/bid/21806 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/28884 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=388120 | x_refsource_CONFIRM | |
| http://secunia.com/advisories/22188 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/28871 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.debian.org/security/2008/dsa-1488 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=489624 | x_refsource_MISC | |
| http://www.security.nnov.ru/Odocument221.html | x_refsource_MISCExploit | |
| http://www.securityfocus.com/archive/1/445788/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/20347 | vdb-entryx_refsource_BID | |
| http://www.securityfocus.com/bid/21806 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/28884 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.