SB2026073150 - Fedora 43 update for skopeo

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026073150

SB2026073150 - Fedora 43 update for skopeo

Published: July 31, 2026

Security Bulletin ID SB2026073150
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Resource exhaustion (CVE-ID: CVE-2026-27145)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in crypto/x509 certificate hostname verification when processing certificates with a large DNS subject alternative name list. A remote attacker can present a specially crafted certificate to cause a denial of service.

The excessive verification cost occurs before the certificate chain is built, so the overhead is incurred even for untrusted certificates.


Remediation

Install update from vendor's website.

References