Red Hat Security Advisory: OpenShift Container Platform 4.19.27 packages and security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 4.3 Medium · fixed in Red Hat package updates : update Red Hat tar when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.17.54
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 29 Oct 2025
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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Gogithub.com/golang/go/src/archive/tarpkg:golang/github.com/golang/go/src/archive/tarOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat has released updated packages for OpenShift Container Platform 4.17.54 and 4.19.27 that fix these vulnerabilities. Upgrades can be performed using the OpenShift CLI (oc) or web console, following the official Red Hat upgrade documentation. No additional mitigations are indicated by the vendor beyond applying these updates.
Description
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.19.27. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:5878 Security Fix(es): * golang: archive/tar: Unbounded allocation when parsing GNU sparse map (CVE-2025-58183) * crypto/tls: Unexpected session resumption in crypto/tls (CVE-2025-68121) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.19 users are advised to upgrade to these release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html-single/updating_clusters/index#updating-cluster-cli.
References
- access.redhat.com/errata/RHSA-2026:5876 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2407258 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2437111 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_5876.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:17595 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2418462 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2430472 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2434431 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2434432 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_17595.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20034 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2025-58183 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-29063 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-33186 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-34986 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-35469 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-41674 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_20034.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:20089 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-24049 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_20089.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:21701 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_21701.json (opens in a new tab)