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TI-2018-12802 Aliases CVE-2018-17983GHSA-p575-cf9h-wv42

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

Priority MEDIUM 43CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.

Summary

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

Why it matters now

EPSS 0.02007 80th percentileScored 2026-11-07
Fix Fixed mercurial (PyPI): 4.7.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—mercurial (PyPI)before 4.7.24.7.2Patch availableGHSA-p575-cf9h-wv42
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • mercurial (PyPI) Vendor— Affected before 4.7.2 Fixed in 4.7.2 Patch available GHSA-p575-cf9h-wv42

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mercurial:mercurial:*:*:*:*:*:*:*:*before 4.7.2VulnerableMercurial
  • cpe:2.3:a:mercurial:mercurial:*:*:*:*:*:*:*:* Versions before 4.7.2 Vulnerable ·Mercurial

Remediation

  • Fix · GHSA-p575-cf9h-wv42 mercurial (PyPI) Fixed in 4.7.2 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-17983
  2. 2026-10-03 Alias added: GHSA-p575-cf9h-wv42

References

Patch 1

Advisory 1

Other 2

  • TI-2014-07619 Git before 1.8.5.6, 1.9.x before 1.9.5, 2.0.x before 2.0.5, 2.1.x before 2.1.4, and 2.2.x… CVSS 3.1CRITICAL 9.8
  • TI-2017-06870 In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch… CVSS 3.1HIGH 8.8
  • TI-2017-14453 Mercurial prior to 4.3 did not adequately sanitize hostnames passed to ssh, leading to possible shell-injection attacks. CVSS 3.0CRITICAL 9.8
  • TI-2017-12752 In Mercurial before 4.4.1, it is possible that a specially malformed repository can cause… CVSS 3.0CRITICAL 9.8
  • TI-2018-09592 mpatch.c in Mercurial before 4.6.1 mishandles integer addition and subtraction, aka OVE-20180430-0002. CVSS 3.0CRITICAL 9.8
  • TI-2016-03079 The binary delta decoder in Mercurial before 3.7.3 allows remote attackers to execute… CVSS 3.1HIGH 8.8
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences