Description
Dulwich before 1.2.9 contains a denial of service vulnerability in Pack.resolve_object that allows attackers to cause infinite recursion via self-referential OFS_DELTA objects. Attackers can supply a malicious packfile with an OFS_DELTA delta_offset of 0 to exhaust CPU during clone, fetch, or cat-file operations.
Published: 2026-10-21
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Wed, 21 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Description Dulwich before 1.2.9 contains a denial of service vulnerability in Pack.resolve_object that allows attackers to cause infinite recursion via self-referential OFS_DELTA objects. Attackers can supply a malicious packfile with an OFS_DELTA delta_offset of 0 to exhaust CPU during clone, fetch, or cat-file operations.
Title Dulwich before 1.2.9 Infinite Loop DoS via Pack.resolve_object
First Time appeared Dulwich Project
Dulwich Project dulwich
Weaknesses CWE-835
CPEs cpe:2.3:a:dulwich_project:dulwich:*:*:*:*:*:*:*:*
Vendors & Products Dulwich Project
Dulwich Project dulwich
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Dulwich Project Dulwich
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-21T00:36:59.083Z

Reserved: 2026-10-20T21:46:55.741Z

Link: CVE-2026-114095

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-21T01:17:34.763

Modified: 2026-10-21T01:17:34.883

Link: CVE-2026-114095

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-835

    Loop with Unreachable Exit Condition ('Infinite Loop')