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CVE-2026-114095— Dulwich before 1.2.9 Infinite Loop DoS via Pack.resolve_object

Quick assessment

Affected
jelmer dulwich
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Dulwich 1.2.9 之前的版本在 函数中存在拒绝服务漏洞。攻击者可通过构造自引用的 OFS_DELTA 对象，触发无限递归。具体而言，攻击者可提供包含 为 0 的恶意 OFS_DELTA 对象的 packfile，在 clone、fetch 或 cat-file 操作过程中耗尽 CPU 资源。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood
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I. Basic Information for CVE-2026-114095

Vulnerability Information
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Vulnerability Title
Dulwich before 1.2.9 Infinite Loop DoS via Pack.resolve_object
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
jelmer dulwich 0 ~ 1.2.9 -

II. Public POCs for CVE-2026-114095

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III. Intelligence Information for CVE-2026-114095

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Other References for CVE-2026-114095 (2)

Same Patch Batch · jelmer · 2026-10-21 · 5 CVEs total

CVE-2026-114094 8.8 HIGH Dulwich before 1.2.9 Arbitrary File Write via DOS drive letter paths
CVE-2026-114096 7.8 HIGH Dulwich 0.24.0 before 1.2.8 Symlink Write-Through via porcelain.checkout paths
CVE-2026-114097 7.8 HIGH Dulwich 0.23.1 before 1.2.8 Symlink Path Traversal via filter_branch Index Filter
CVE-2026-114098 7.8 HIGH Dulwich 0.22.5 before 1.2.8 Path Traversal via Stash Pop Symlinks

IV. Related Vulnerabilities

Same product: dulwich
Same vendor: jelmer
Same weakness: CWE-835

V. Comments for CVE-2026-114095

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