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CVE-2026-87720— Incorrect Authorization via Stale ProjectCache Eviction and Repeated .git Suffixes in Gerrit Code Review

Quick assessment

Affected
Gerrit Gerrit
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.

Gerrit Code Review 2.16.0 至 3.12.9、3.13.0 至 3.13.8 以及 3.14.0 至 3.14.2 版本中，在项目名称规范化（ ）和项目缓存过期逻辑（ ）中存在不当授权（CWE-863）漏洞。该漏洞允许已认证用户（如果仓库曾为公开状态，则未认证用户也可利用）通过构造包含重复 后缀（如 ）的请求，借助 REST API、Gitiles 或 SSH Git 命令，实现以下两种危害： 1. 未经授权的私有仓库内容泄露； 2. 被撤销的项目所有者管理权限被持久化恢复。 其根本原因在于

CVSS 7.6 · High EPSS 0.30% · P23

Affected Version Matrix 3

VendorProduct Version RangeStatus
Gerrit Gerrit 2.16.0< 3.12.10 affected
3.13.0< 3.13.9 affected
3.14.0< 3.14.3 affected
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I. Basic Information for CVE-2026-87720

Vulnerability Information
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Vulnerability Title
Incorrect Authorization via Stale ProjectCache Eviction and Repeated .git Suffixes in Gerrit Code Review
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect Authorization (CWE-863) in project name normalization (ProjectUtil.stripGitSuffix) and ProjectCache eviction logic (ProjectCacheImpl) in Gerrit Code Review versions 2.16.0 through 3.12.9, 3.13.0 through 3.13.8, and 3.14.0 through 3.14.2 allows an authenticated user (or an unauthenticated user if the repository was previously public) to cause unauthorized disclosure of private repository content and durable restoration of revoked project-owner administrative privileges via crafted requests using repeated .git suffixes (such as project.git.git) across REST APIs, Gitiles, or SSH Git commands. Because Gerrit strips only a single terminal .git suffix when constructing the logical ProjectCache key while JGit (FileKey.lenient) resolves the suffixed alias to the same canonical bare repository on disk, revoking read access or removing owner rules on the canonical project name fails to evict the cached alias ProjectState during the cache validity window, enabling reads of newly created private commits or writes to refs/meta/config. This issue is fixed in Gerrit Code Review versions 3.12.10, 3.13.9, and 3.14.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Gerrit Gerrit 2.16.0 ~ 3.12.10 -

II. Public POCs for CVE-2026-87720

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III. Intelligence Information for CVE-2026-87720

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Vendor Advisories for CVE-2026-87720 (1)

Same Patch Batch · Gerrit · 2026-09-24 · 3 CVEs total

CVE-2026-87721 8.7 HIGH Denial of Service via Exponential Backtracking in ANTLR Search Query Parser in Gerrit Code
CVE-2026-87722 8.7 HIGH Regular Expression Denial of Service (ReDoS) in Search Query Predicates and REST Filter En

IV. Related Vulnerabilities

Same product: Gerrit
Same vendor: Gerrit
Same weakness: CWE-863