CVE-2015-2942

7.1 HIGH 3% exploit odds Fix listed

What it is

MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2, when using HHVM, allows remote attackers to cause a denial of service (CPU and memory consumption) via a large number of nested entity references in an (1) SVG file or (2) XMP metadata in a PDF file, aka a "billion laughs attack," a different vulnerability than CVE-2015-2937.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 2.8% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2015-04-13 14:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:25 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.8% in the next 30 days (EPSS).
Severity: 7.1 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2015-04-13 14:59 UTC
Last modified: 2026-06-17 00:25 UTC
Exploit probability: 2.8% · EPSS, next 30 days
Weakness: CWE-399
Record status: Modified

Affected

Mediawiki ≤ 1.19.23
Mediawiki 1.20
Mediawiki 1.20.1
Mediawiki 1.20.2
Mediawiki 1.20.3
Mediawiki 1.20.4
Mediawiki 1.20.5
Mediawiki 1.20.6

Attack profile CVSS 2.0 · 7.1

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2015-2942.md and follow it. Check whether this project is affected by CVE-2015-2942. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record