Read the docs
TI-2018-09593 Aliases CVE-2018-13348GHSA-3v62-ww8w-758m

The mpatch_decode function in mpatch.c in Mercurial before 4.6.1 mishandles certain…

Priority LOW 37CWE-20Published · Updated

Key facts

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

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

Summary

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.

Why it matters now

EPSS 0.02145 82nd percentileScored 2026-11-07
Fix Fixed mercurial (PyPI): 4.6.1

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 4.6.14.6.1Patch availableGHSA-3v62-ww8w-758m
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • mercurial (PyPI) Vendor— Affected before 4.6.1 Fixed in 4.6.1 Patch available GHSA-3v62-ww8w-758m

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mercurial:mercurial:*:*:*:*:*:*:*:*before 4.6.1VulnerableMercurial
  • cpe:2.3:a:mercurial:mercurial:*:*:*:*:*:*:*:* Versions before 4.6.1 Vulnerable ·Mercurial

Remediation

  • Fix · GHSA-3v62-ww8w-758m mercurial (PyPI) Fixed in 4.6.1 Advisory →

Vendor assessments

Red Hat

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

Not affected: 4 products
  • Red Hat Ansible Tower 3
  • 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-2018-13348
  2. 2026-10-03 Alias added: GHSA-3v62-ww8w-758m

References

Patch 1

Advisory 2

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