SB2026042123 - Fedora 44 update for openssl

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Main Vulnerability Database SB2026042123

SB2026042123 - Fedora 44 update for openssl

Published: April 21, 2026

Security Bulletin ID SB2026042123
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-2673)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

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


The vulnerability allows a remote attacker to cause the use of a less preferred key agreement group.

The vulnerability exists due to improper implementation of group tuple handling in TLS 1.3 server key exchange group negotiation when processing a ClientHello with initial predicted keyshares while the server configuration uses the "DEFAULT" keyword. A remote attacker can send a crafted TLS handshake to cause the use of a less preferred key agreement group.

No OpenSSL FIPS modules are affected because the vulnerable code lies outside the FIPS boundary.


Remediation

Install update from vendor's website.

References