CVE-2026-53584: libgit2: Submodule path traversal
CSIRTS triage
- What
- libgit2 allows path traversal via maliciously crafted submodule paths during repository operations.
- Who is affected
- Repositories with untrusted submodule configurations or systems cloning untrusted repositories.
- Urgency
- Medium severity (CVSS 4.3) and not exploited; standard patch deployment is appropriate.
- Action
- Update libgit2 to a version that validates and sanitizes submodule paths to prevent directory traversal.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53584
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-535840.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-53584 | coverage & exploitation status | NVD · CVE.org |
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