CVE-2026-87720 (GCVE-0-2026-87720)

Vulnerability from cvelistv5 – Published: 2026-09-24 21:59 – Updated: 2026-09-25 16:55
VLAI
Title
Incorrect Authorization via Stale ProjectCache Eviction and Repeated .git Suffixes in Gerrit Code Review
Summary
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.
Severity
7.6 (High)
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
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:51 UTC
CWE
  • CWE-863 - Incorrect Authorization
  • CWE-613 - Insufficient Session Expiration
  • CWE-706 - Use of Incorrectly-Resolved Name or Reference
Assigner
Google CNA under the Google root
CNA scorecard B 78/100 over 38 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Gerrit Gerrit Affected: 2.16.0 , < 3.12.10 (semver)
Affected: 3.13.0 , < 3.13.9 (semver)
Affected: 3.14.0 , < 3.14.3 (semver)
guessed Create a notification for this product.
Date Public
2026-09-22 00:00
Credits
Jaime Cavero
Show details on NVD website
To clipboard 

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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