---
id: CVE-2026-109350
title: >-
  Gitoxide gix-pack before 0.75.0 contains a denial of service vulnerability
  that allows malicious remotes to crash fetch operations by sending crafted
  thin-pack OFS_DELTA entries
summary: >-
  Gitoxide gix-pack before 0.75.0 contains a denial of service vulnerability
  that allows malicious remotes to crash fetch operations by sending crafted
  thin-pack OFS_DELTA entries. Attackers can serve a thin pack with a REF_DELTA
  referenci…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-617
  - CWE-1285
vendor: GitoxideLabs
product: gix-pack
affected:
  - gix-pack < 0.75.0
patched:
  - hardened_images
published: '2026-10-12'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T17:27:24.847'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109350'
references:
  - url: >-
      https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-mpf5-465h-mr53
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/gitoxide-gix-pack-before-0.75.0-denial-of-service-via-ofs-delta-base-distance
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-mpf5-465h-mr53
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109350.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-109350'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2549792'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-109350'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109350'
  - url: 'https://access.redhat.com/errata/RHSA-2026:83849'
  - url: 'https://access.redhat.com/errata/RHSA-2026:83879'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
epss: 0.00321
epssPercentile: 0.24962
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-13T17:38:38.850087Z'
ingestedAt: '2026-10-12T18:00:08.210Z'
---

## Overview

Gitoxide gix-pack before 0.75.0 contains a denial of service vulnerability that allows malicious remotes to crash fetch operations by sending crafted thin-pack OFS_DELTA entries. Attackers can serve a thin pack with a REF_DELTA referencing an existing object followed by an OFS_DELTA whose base_distance exceeds pack_offset, triggering a panic in LookupRefDeltaObjectsIter that aborts the fetch process.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:83849** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:83849)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109350.json)
- **RHSA-2026:83879** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:83879)