MantisBT before 1.2.18 uses the public_key parameter value as the key to the CAPTCHA answer, which allows remote attackers to bypass the CAPTCHA protection mechanism by leveraging knowledge of a CAPTCHA answer for a public_key parameter value, as demonstrated by E4652 for the public_key value 0
Published Dec 6, 2014
5.0
MEDIUMCVSS 2.0
EPSS 2.34%
Description
MantisBT before 1.2.18 uses the public_key parameter value as the key to the CAPTCHA answer, which allows remote attackers to bypass the CAPTCHA protection mechanism by leveraging knowledge of a CAPTCHA answer for a public_key parameter value, as demonstrated by E4652 for the public_key value 0.
Affected products
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:N/I:P/A:N
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 | 2.34% (0.02343) | 83.02th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.34% (0.02343) | 81.37th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.85% (0.00851) | 73.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.64% (0.00641) | 79.92th | v3 (v2023.03.01) |
| Jul 18, 2024 | 0.65% (0.00649) | 79.56th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.64% (0.00637) | 78.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.64% (0.00637) | 75.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
References (8)
- http://secunia.com/advisories/62101 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2015/dsa-3120 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2014/11/26/19 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2014/11/27/8 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/71321 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/99004 vdb-entryx_refsource_XF
- https://github.com/mantisbt/mantisbt/commit/7bb78e45 x_refsource_CONFIRM
- https://www.mantisbt.org/bugs/view.php?id=17811 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/62101 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.debian.org/security/2015/dsa-3120 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2014/11/26/19 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2014/11/27/8 | mailing-listx_refsource_MLIST | |
| http://www.securityfocus.com/bid/71321 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/99004 | vdb-entryx_refsource_XF | |
| https://github.com/mantisbt/mantisbt/commit/7bb78e45 | x_refsource_CONFIRM | |
| https://www.mantisbt.org/bugs/view.php?id=17811 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.