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CVE-2026-114097— Dulwich 0.23.1 before 1.2.8 Symlink Path Traversal via filter_branch Index Filter

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 0.23.1 至 1.2.8（不含）版本在 函数中存在路径遍历漏洞。攻击者可利用跨提交持久存在的符号链接，将文件写入工作目录之外。具体而言，攻击者可构造一个仓库，使祖先提交中的符号链接在 操作期间，将后代提交的文件写入重定向至 目录，从而通过写入恶意钩子脚本实现代码执行。

CVSS 7.8 · High
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I. Basic Information for CVE-2026-114097

Vulnerability Information
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Vulnerability Title
Dulwich 0.23.1 before 1.2.8 Symlink Path Traversal via filter_branch Index Filter
Source: CVE Program / CVE List V5
Vulnerability Description
Dulwich from 0.23.1 before 1.2.8 contains a path traversal vulnerability in CommitFilter._apply_index_filter() that allows attackers to write files outside the working directory via symlinks persisting between commits. Attackers can craft a repository where an ancestor commit's symlink redirects a descendant commit's file writes during filter_branch, enabling code execution by writing into .git/hooks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
jelmer dulwich 0.23.1 ~ 1.2.8 -

II. Public POCs for CVE-2026-114097

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III. Intelligence Information for CVE-2026-114097

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Other References for CVE-2026-114097 (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-2026-114098 7.8 HIGH Dulwich 0.22.5 before 1.2.8 Path Traversal via Stash Pop Symlinks
CVE-2026-114095 6.5 MEDIUM Dulwich before 1.2.9 Infinite Loop DoS via Pack.resolve_object

IV. Related Vulnerabilities

Same product: dulwich
Same vendor: jelmer
Same weakness: CWE-22

V. Comments for CVE-2026-114097

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