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CVE-2026-53584— libgit2: Submodule path traversal

Quick assessment

Affected
libgit2 libgit2
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.

libgit2 是一个便携式的 C 语言实现，提供了 Git 核心方法的链接库，拥有稳定的 API，允许将 Git 功能集成到您的应用程序中。在 1.8.6 和 1.9.5 版本之前，libgit2 不会拒绝从 .gitmodules 加载的子模块路径中的遍历组件（如 “../”）。受影响的源文件路径包括 src/libgit2/submodule.c 中的 git_submodule_lookup 和 git_submodule_add_setup。通过构造一个特定的仓库，可以指定类似 ../escape-tar

CVSS 4.3 · Medium EPSS 0.40% · P34

Affected Version Matrix 2

VendorProduct Version RangeStatus
libgit2 libgit2 < 1.8.6 affected
>= 1.9.0, < 1.9.5 affected
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I. Basic Information for CVE-2026-53584

Vulnerability Information
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Vulnerability Title
libgit2: Submodule path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, libgit2 does not reject traversal components in a submodule path loaded from .gitmodules. The affected src/libgit2/submodule.c paths include git_submodule_lookup and git_submodule_add_setup. A crafted repository can specify a path such as ../escape-target, and applications that initialize the submodule can create directories outside the repository working tree. This issue is fixed in versions 1.8.6 and 1.9.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
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
libgit2 libgit2 < 1.8.6 -

II. Public POCs for CVE-2026-53584

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III. Intelligence Information for CVE-2026-53584

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Patches & Fixes for CVE-2026-53584 (4)

Vendor Advisories for CVE-2026-53584 (1)

Vendor Pages for CVE-2026-53584 (1)

Same Patch Batch · libgit2 · 2026-08-20 · 5 CVEs total

CVE-2026-53587 7.5 HIGH libgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pk
CVE-2026-53586 6.5 MEDIUM libgit2: HTTP transport can leak credentials to an offsite redirect target
CVE-2026-53583 6.5 MEDIUM libgit2: Inverted IP SubjectAltName Comparison in OpenSSL Backend
CVE-2026-53585 5.3 MEDIUM libgit2: Unbounded Memory Allocation via Delta Object Result-Size Header

IV. Related Vulnerabilities

Same product: libgit2
Same vendor: libgit2
Same weakness: CWE-22

V. Comments for CVE-2026-53584

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