What’s Vulnerable › Vulnerabilities

CVE-2018-13346

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-06 · updated 2026-06-17
• Weakness: CWE-20

Description

The mpatch_apply function in mpatch.c in Mercurial before 4.6.1 incorrectly proceeds in cases where the fragment start is past the end of the original data, aka OVE-20180430-0004.

Affected products

• mercurial: before 4.6.1 — fixed in 4.6.1

How to fix

Upgrade to a fixed version: mercurial 4.6.1. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2019:2276
• https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
• https://www.mercurial-scm.org/repo/hg/rev/faa924469635
• https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.6.1_.282018-06-06.29
• https://access.redhat.com/errata/RHSA-2019:2276
• https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
• https://www.mercurial-scm.org/repo/hg/rev/faa924469635
• https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.6.1_.282018-06-06.29

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