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Fencer Intel
medium 6.5

CVE-2018-10888 json

A flaw was found in libgit2 before version 0.27.3.

published 8y ago modified 4mo ago also EUVD-2018-2952

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

A flaw was found in libgit2 before version 0.27.3. A missing check in git_delta_apply function in delta.c file, may lead to an out-of-bound read while reading a binary delta file. An attacker may use this flaw to cause a Denial of Service.

Patch / fix

  • libgit2 libgit2 0.27.3
  • libgit2 Debian 14, Debian 13, Debian 12 0.27.4+dfsg.1-0.1

debian advisories DEBIAN-CVE-2018-10888

  • libgit2 Ubuntu 14.04 LTS 0.19.0-2ubuntu0.4
  • libgit2 Ubuntu 16.04 LTS 0.24.1-2ubuntu0.2
  • libgit2 Ubuntu 18.04 LTS 0.26.0+dfsg.1-1.1ubuntu0.2

ubuntu advisories UBUNTU-CVE-2018-10888

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libgit2 SLE Software Development Kit 12 SP3, Manager Server 3.2, Manager Server 3.1 0.24.1-7.6.1
  • libgit2 SLE Module for Development Tools 15 0.26.6-3.5.2

suse advisories SUSE-SU-2018:3440-1SUSE-SU-2018:2469-1

  • libgit2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 0.27.3-r0
  • libgit2-1.0 Alpine 3.14, Alpine 3.13 0.27.3-r0
  • libgit2-1.1 Alpine 3.16, Alpine 3.15 0.27.3-r0
  • libgit2-0.27 Alpine 3.10 0.27.3-r0

alpine advisories ALPINE-CVE-2018-10888

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2018-10888 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-10888 updated cvss 5.3

libgit2: an improper input validation leads to an out-of-bound read in git_delta_apply, allowing to read beyond delta limits

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.85% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

  • libgit2 libgit2

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.