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libgit2

A security vulnerability identified as CVE-2026-53587 exists in libgit2, a Git core methods library included with Rust. This vulnerability allows a denial of service via a heap out-of-bounds read triggered by a malicious Git server. The issue affects specific Rust package versions distributed by Red Hat and Ubuntu. A patch is available to address this vulnerability.

CVE-2026-53587 is a vulnerability in libgit2, a library used by Rust for Git core methods. The flaw involves a heap out-of-bounds read that can be triggered by a malicious Git server, resulting in a denial of service condition. This vulnerability affects certain Rust package versions distributed by Red Hat and Ubuntu. The vendor advisory confirms that a patch is available to mitigate this issue.

Detailed information about Libgit2: [Unknown description] (CVE-2026-53587) affecting null libgit2. Get real-time updates, technical details, and mitigation stra

Libgit2: [Unknown description] (CVE-2026-53587) - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2026:67286

https://access.redhat.com/security/updates/classification/#important

2520693

Canonical URL

SUSE ratings

URL of this CSAF notice

URL for RHSA-2026:69109

E-Mail link for RHSA-2026:69109

SUSE CVE CVE-2026-53587 page

security update for rust

A vulnerability in libgit2 prior to versions 1.8.6 and 1.9.5 causes incorrect validation of IP-literal HTTPS URLs when using OpenSSL. This flaw allows a network attacker with a CA-trusted certificate containing any IP SubjectAltName to intercept connections. The issue affects only OpenSSL builds and does not impact DNS SubjectAltName validation or other TLS backends. The vulnerability is fixed in libgit2 versions 1.8.6 and 1.9.5. Red Hat has released updated packages including libgit2-1.9.7-1.hum1 to address this issue.

The vulnerability identified as CVE-2026-53583 affects libgit2 versions prior to 1.8.6 and 1.9.5. It involves incorrect validation of IP-literal HTTPS URLs when using OpenSSL as the TLS backend. This validation flaw allows a network attacker who possesses a CA-trusted certificate with any IP SubjectAltName to intercept TLS connections, effectively undermining the security of the connection. The flaw does not affect DNS SubjectAltName validation or other TLS backends besides OpenSSL. Red Hat has issued a security advisory and released updated libgit2 packages (version 1.9.7-1.hum1) to fix this vulnerability.

Detailed information about Libgit2: [Unknown description] (CVE-2026-53583) affecting null libgit2. Get real-time updates, technical details, and mitigation stra

Libgit2: [Unknown description] (CVE-2026-53583) - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2026:59361

https://images.redhat.com/

https://access.redhat.com/security/cve/CVE-2026-53587

https://access.redhat.com/security/updates/classification/

https://access.redhat.com/security/cve/CVE-2026-53586

https://access.redhat.com/security/cve/CVE-2026-53584

https://access.redhat.com/security/cve/CVE-2026-53585

https://access.redhat.com/security/cve/CVE-2026-53583

SUSE CVE CVE-2026-53583 page

SUSE CVE CVE-2026-53584 page

SUSE CVE CVE-2026-53585 page

SUSE CVE CVE-2026-53586 page

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update


security update for rustCVE-2026-53587 0 A security vulnerability identified as CVE-2026-53587 exists in libgit2, a Git core methods library included with Rust. This vulnerability allows a denial of service via a heap out-of-bounds read triggered by a malicious Git server. The issue affects specific Rust package versions distributed by Red Hat and Ubuntu. A patch is available to address this vulnerability. HighVulnerability#gcve #osv #ubuntu-cve-2026-53587 Join the discussion	GCVE Database	09/21/2026, 00:00:00 UTC Added: 08/24/2026, 13:51:18 UTC
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement updateCVE-2026-53583 0 A vulnerability in libgit2 prior to versions 1.8.6 and 1.9.5 causes incorrect validation of IP-literal HTTPS URLs when using OpenSSL. This flaw allows a network attacker with a CA-trusted certificate containing any IP SubjectAltName to intercept connections. The issue affects only OpenSSL builds and does not impact DNS SubjectAltName validation or other TLS backends. The vulnerability is fixed in libgit2 versions 1.8.6 and 1.9.5. Red Hat has released updated packages including libgit2-1.9.7-1.hum1 to address this issue. HighVulnerability#gcve #osv #ubuntu-cve-2026-53583 Join the discussion	GCVE Database	08/25/2026, 09:07:50 UTC Added: 08/24/2026, 13:51:20 UTC

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