Algorithmic complexity vulnerability in Moodle 1.9.x before 1.9.19, 2.0.x before 2.0.10, 2.1.x before 2.1.7, and 2.2.x before 2.2.4 allows remote authenticated users to cause a denial of service (CPU consumption) by using the advanced-search feature on a database activity that has many records
Published Jul 23, 2012
4.0
MEDIUMCVSS 2.0
EPSS 1.27%
Description
Algorithmic complexity vulnerability in Moodle 1.9.x before 1.9.19, 2.0.x before 2.0.10, 2.1.x before 2.1.7, and 2.2.x before 2.2.4 allows remote authenticated users to cause a denial of service (CPU consumption) by using the advanced-search feature on a database activity that has many records.
Affected products
No data.
- 1.9.1
- 1.9.2
- 1.9.3
- 1.9.4
- 1.9.5
- 1.9.6
- 1.9.7
- 1.9.8
- 1.9.9
- 1.9.10
- 1.9.11
- 1.9.12
- 1.9.13
- 1.9.14
- 1.9.15
- 1.9.16
- 1.9.17
- 1.9.18
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.0.6
- 2.0.7
- 2.0.8
- 2.0.9
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.5
- 2.1.6
- 2.2.0
- 2.2.1
- 2.2.2
- 2.2.3
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:S/C:N/I:N/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.27% (0.01275) | 68.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.27% (0.01275) | 66.01th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.62% (0.00621) | 68.29th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.46% (0.00458) | 76.13th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.46% (0.00458) | 74.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.46% (0.00458) | 71.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.13% (0.01132) | 56.11th | v2 (v2022.01.01) |
| Sep 22, 2022 | 1.13% (0.01132) | 54.59th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.13% (0.01132) | 52.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.13% (0.01132) | 30.65th | v2 (v2022.01.01) |
No CWE recorded.
References (5)
- http://git.moodle.org/gw?p=moodle.git&a=search&h=refs%2Fheads%2FMOODLE_22_STABLE&st=commit&s=MDL-32126 x_refsource_CONFIRM
- http://openwall.com/lists/oss-security/2012/07/17/1 mailing-listx_refsource_MLIST
- http://secunia.com/advisories/49890 third-party-advisoryx_refsource_SECUNIA
- http://www.securityfocus.com/bid/54481 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/76964 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://git.moodle.org/gw?p=moodle.git&a=search&h=refs%2Fheads%2FMOODLE_22_STABLE&st=commit&s=MDL-32126 | x_refsource_CONFIRM | |
| http://openwall.com/lists/oss-security/2012/07/17/1 | mailing-listx_refsource_MLIST | |
| http://secunia.com/advisories/49890 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.securityfocus.com/bid/54481 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/76964 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.