SB2026100547 - Fedora 44 update for curl

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Main Vulnerability Database SB2026100547

SB2026100547 - Fedora 44 update for curl

Published: October 5, 2026

Security Bulletin ID SB2026100547
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2026-18924)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to trigger a use-after-free.

The vulnerability exists due to use-after-free in libcurl HTTP/2 server push stream handling when processing an HTTPS HTTP/2 server push on a shared connection. A remote attacker can send a server push response sequence to trigger a use-after-free.

The issue affects libcurl only and requires HTTP/2 server push to be enabled and accepted by the application, along with connection sharing.


Remediation

Install update from vendor's website.

References