Detections
Analytics

Echo: libgit2: security update to 1.9.0+ds-2+deb13u1

medium Tenable Self-Hosted Container Security Plugin ID 463877

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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,
 verify_server_cert in src/libgit2/streams/openssl.c uses an inverted !!memcmp result in the GEN_IPADD
 branch when comparing an IP-literal host with a certificate IP SubjectAltName. OpenSSL builds reject
 matching IP addresses and accept mismatched IP addresses, allowing a network attacker with a CA-trusted
 certificate containing any IP SubjectAltName to intercept libgit2 connections to IP-literal HTTPS URLs.
 DNS SubjectAltName validation and non-OpenSSL TLS backends are not affected. This issue is fixed in
 versions 1.8.6 and 1.9.5. (CVE-2026-53583)

Solution

Update the libgit2 library and its related packages to version 1.9.0+ds-2+deb13u1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-53583

Plugin Details

Severity: Medium

ID: 463877

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.93

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-53583

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/31/2026

Vulnerability Publication Date: 7/23/2026

Reference Information

CVE: CVE-2026-53583