{"apiVersion":"1.0","identifier":"CVE-2026-53585","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, git_delta_apply in src/libgit2/delta.c trusts the attacker-controlled res_sz value parsed by hdr_sz from a delta object header and passes that amount to git__malloc before validating delta instructions. Malicious pack data supplied through git_clone, git_fetch, git_remote_fetch, git_indexer_append, or a local attacker-supplied repository can use a very small multi-level OFS_DELTA chain to retain extremely large allocations and exhaust memory. This issue is fixed in versions 1.8.6 and 1.9.5.","publishedAt":"2026-08-20T19:16:54","lastModifiedAt":"2026-08-25T16:16:54","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53585","cvssScore":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","epssProbability":0.00329,"riskScore":0.55,"affectedProduct":"libgit2","affectedVersions":"<1.8.6, <1.9.5","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-53585","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-53585","en":"https://www.redsauce.net/en/cves/CVE-2026-53585","fr":"https://www.redsauce.net/fr/cves/CVE-2026-53585","pt":"https://www.redsauce.net/pt/cves/CVE-2026-53585","de":"https://www.redsauce.net/de/cves/CVE-2026-53585","sk":"https://www.redsauce.net/sk/cves/CVE-2026-53585","el":"https://www.redsauce.net/el/cves/CVE-2026-53585"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-53585"}}