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TI-2018-07700 Aliases CVE-2018-10887GHSA-5gcq-g5p3-pjp4

Out-of-bounds read in libgit2

Priority LOW 39CWE-194Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A flaw was found in libgit2 before version 0.27.3. It has been discovered that an unexpected sign extension in git_delta_apply function in delta.c file may lead to an integer overflow which in turn leads to an out of bound read, allowing to read before the base object. An attacker may use this flaw to leak memory addresses or cause a Denial of Service.

Why it matters now

EPSS 0.02051 81st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
libgit2libgit2before version 0.27.3—No fix listedCNA
  • libgit2 Vendorlibgit2 Affected before version 0.27.3 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:*before 0.27.3Vulnerablelibgit2
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:* Versions before 0.27.3 Vulnerable ·libgit2
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-10887
  2. 2026-10-03 Alias added: GHSA-5gcq-g5p3-pjp4

References

Patch 4

Advisory 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-2024-16198 libgit2 is vulnerable to arbitrary code execution due to heap corruption in `git_index_add` CVSS 3.1CRITICAL 9.8
  • TI-2020-09811 An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. CVSS 3.1CRITICAL 9.8
  • TI-2020-09810 An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. CVSS 3.1CRITICAL 9.8
  • TI-2018-11055 In ng_pkt in transports/smart_pkt.c in libgit2 before 0.26.6 and 0.27.x before 0.27.4, a… CVSS 3.1HIGH 7.5
  • TI-2024-16196 libgit2 is vulnerable to a denial of service attack in `git_revparse_single` CVSS 3.1HIGH 7.5
See all 10 →

Sources

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