What’s Vulnerable › Vulnerabilities

CVE-2018-13348

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% 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_decode function in mpatch.c in Mercurial before 4.6.1 mishandles certain situations where there should be at least 12 bytes remaining after the current position in the patch data, but actually are not, aka OVE-20180430-0001.

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://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
• https://www.mercurial-scm.org/repo/hg/rev/90a274965de7
• https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.6.1_.282018-06-06.29
• https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
• https://www.mercurial-scm.org/repo/hg/rev/90a274965de7
• https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.6.1_.282018-06-06.29

Get alerted when CVE-2018-13348 or the next vulnerability affects your stack