SB2026110333 - Fedora 43 update for nodejs-undici

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Main Vulnerability Database SB2026110333

SB2026110333 - Fedora 43 update for nodejs-undici

Published: November 3, 2026

Security Bulletin ID SB2026110333
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) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-18149)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service by accumulating pending promises and streams in applications using undici.

The vulnerability exists due to missing release of response body resources in undici's RetryHandler when a retried request receives a non-retryable response after a truncated response. A remote attacker can operate a malicious server that repeatedly returns this response sequence to leave the application's original response body pending indefinitely and cause a denial of service.

Reads such as response.body.text() hang, and bodyTimeout does not fire for the orphaned response body.


Remediation

Install update from vendor's website.

References