What’s Vulnerable › Vulnerabilities

CVE-2018-17983

• Severity: critical (CVSS 9.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-10-04 · updated 2026-06-17
• Weakness: CWE-125

Description

cext/manifest.c in Mercurial before 4.7.2 has an out-of-bounds read during parsing of a malformed manifest entry.

Affected products

• mercurial: before 4.7.2 — fixed in 4.7.2

How to fix

Upgrade to a fixed version: mercurial 4.7.2. Check the vendor advisory for mitigations.

References

• https://www.mercurial-scm.org/repo/hg/rev/5405cb1a7901
• https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.7.2_.282018-10-01.29
• https://www.mercurial-scm.org/repo/hg/rev/5405cb1a7901
• https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.7.2_.282018-10-01.29

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