Red Hat Security Advisory: OpenShift Container Platform 4.21.23 security and extras update
Affects Red HatSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 11:52 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 7 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
AI-suggested
A fix is available in Red Hat OpenShift Container Platform 4.21.23. Users should upgrade to this version using the OpenShift CLI or web console as soon as the updated packages and images are available in their release channel. Follow the official Red Hat documentation for cluster upgrade procedures to fully apply the update.
Description
Red Hat OpenShift Container Platform 4.21.23 includes a security update addressing a vulnerability in the fast-uri component that allows URI authority bypass due to improper delimiter handling (CVE-2026-6322). This update is rated as having an important security impact. Users of OpenShift Container Platform 4.21 are advised to upgrade to the updated packages and images to mitigate this issue.