MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2, when using HHVM or Zend PHP, allows remote attackers to cause a denial of service ("quadratic blowup" and memory consumption) via an XML file containing an entity declaration with long replacement text and many references to this entity, a different vulnerability than CVE-2015-2942
Published Apr 13, 2015
7.1
HIGHCVSS 2.0
EPSS 2.69%
Description
MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2, when using HHVM or Zend PHP, allows remote attackers to cause a denial of service ("quadratic blowup" and memory consumption) via an XML file containing an entity declaration with long replacement text and many references to this entity, a different vulnerability than CVE-2015-2942.
Affected products
No data.
- ≤ 1.19.23
- 1.20
- 1.20.1
- 1.20.2
- 1.20.3
- 1.20.4
- 1.20.5
- 1.20.6
- 1.20.7
- 1.20.8
- 1.21
- 1.21.1
- 1.21.2
- 1.21.3
- 1.21.4
- 1.21.5
- 1.21.6
- 1.21.7
- 1.21.8
- 1.21.9
- 1.21.10
- 1.21.11
- 1.22.0
- 1.22.1
- 1.22.2
- 1.22.3
- 1.22.4
- 1.22.5
- 1.22.6
- 1.22.7
- 1.22.8
- 1.22.9
- 1.22.10
- 1.22.11
- 1.22.12
- 1.22.13
- 1.22.14
- 1.22.15
- 1.23.0
- 1.23.1
- 1.23.2
- 1.23.3
- 1.23.4
- 1.23.5
- 1.23.6
- 1.23.7
- 1.23.8
- 1.24.0
- 1.24.1
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:M/Au:N/C:N/I:N/A:C
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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.69% (0.02690) | 85.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.71% (0.02710) | 84.00th | v5 (v2026.06.15) |
| Dec 28, 2025 | 2.02% (0.02017) | 83.27th | v4 (v2025.03.14) |
| Dec 27, 2025 | 3.03% (0.03034) | 86.28th | v4 (v2025.03.14) |
| Oct 28, 2025 | 2.02% (0.02017) | 83.12th | v4 (v2025.03.14) |
| Oct 27, 2025 | 3.03% (0.03034) | 86.17th | v4 (v2025.03.14) |
| Oct 1, 2025 | 2.02% (0.02017) | 83.14th | v4 (v2025.03.14) |
| Jul 30, 2025 | 3.03% (0.03034) | 86.13th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.14% (0.01137) | 76.91th | v4 (v2025.03.14) |
| Dec 17, 2024 | 4.41% (0.04407) | 92.30th | v3 (v2023.03.01) |
| Dec 12, 2024 | 3.26% (0.03257) | 91.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.65% (0.03649) | 90.27th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (7)
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:200 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2015/04/01/1 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/04/07/3 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/73477 vdb-entryx_refsource_BID
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html mailing-listx_refsource_MLISTPatchVendor Advisory
- https://phabricator.wikimedia.org/T71210 x_refsource_CONFIRM
- https://security.gentoo.org/glsa/201510-05 vendor-advisoryx_refsource_GENTOO
| Link | Providers | Tags |
|---|---|---|
| http://www.mandriva.com/security/advisories?name=MDVSA-2015:200 | vendor-advisoryx_refsource_MANDRIVA | |
| http://www.openwall.com/lists/oss-security/2015/04/01/1 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2015/04/07/3 | mailing-listx_refsource_MLIST | |
| http://www.securityfocus.com/bid/73477 | vdb-entryx_refsource_BID | |
| https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html | mailing-listx_refsource_MLISTPatchVendor Advisory | |
| https://phabricator.wikimedia.org/T71210 | x_refsource_CONFIRM | |
| https://security.gentoo.org/glsa/201510-05 | vendor-advisoryx_refsource_GENTOO |
Change history (0)
No recorded changes yet.