Allocation of Resources Without Limits or Throttling The advisory has been revoked - it doesn't affect any version of package openshift4/oc-mirror-plugin-rhel9 (opens in a new tab)
Threat Intelligence
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The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-OPENSHIFT4OCMIRRORPLUGINRHEL9-15538006
- published14 Mar 2026
- disclosed24 Feb 2026
Introduced: 24 Feb 2026
CVE-2026-27571 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openshift4/oc-mirror-plugin-rhel9 package and not the openshift4/oc-mirror-plugin-rhel9 package as distributed by RHEL.
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. The WebSockets handling of NATS messages handles compressed messages via the WebSockets negotiated compression. Prior to versions 2.11.2 and 2.12.3, the implementation bound the memory size of a NATS message but did not independently bound the memory consumption of the memory stream when constructing a NATS message which might then fail validation for size reasons. An attacker can use a compression bomb to cause excessive memory consumption, often resulting in the operating system terminating the server process. The use of compression is negotiated before authentication, so this does not require valid NATS credentials to exploit. The fix, present in versions 2.11.2 and 2.12.3, was to bounds the decompression to fail once the message was too large, instead of continuing on. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points.
References
- https://access.redhat.com/security/cve/CVE-2026-27571
- https://github.com/nats-io/nats-server/commit/f77fb7c4535e6727cc1a2899cd8e6bbdd8ba2017
- https://github.com/nats-io/nats-server/releases/tag/v2.11.12
- https://github.com/nats-io/nats-server/releases/tag/v2.12.3
- https://github.com/nats-io/nats-server/security/advisories/GHSA-qrvq-68c2-7grw