SB2026082635 - Multiple vulnerabilities in Red Hat build of MicroShift 4.18 packages

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Main Vulnerability Database SB2026082635

SB2026082635 - Multiple vulnerabilities in Red Hat build of MicroShift 4.18 packages

Published: August 26, 2026

Security Bulletin ID SB2026082635
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
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 2 vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2026-39820)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 8.7 [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]


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

The vulnerability exists due to uncontrolled resource consumption in net/mail address and date parsing functions when parsing well-crafted input. A remote attacker can send specially crafted input to cause a denial of service.


2) Resource exhaustion (CVE-ID: CVE-2026-42499)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 8.7 [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]


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

The vulnerability exists due to uncontrolled resource consumption in net/mail consumePhrase when parsing an email address according to RFC 5322. A remote attacker can supply a pathological email address input to cause a denial of service.


Remediation

Install update from vendor's website.

References