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CVE-2026-27141VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.21.2

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-27141· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade Red Hat http2 to 0.51.0 soon.

Data as of 30 Oct 2026, 00:14 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 0.51.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 29 Oct 2026.

What to do

Upgrade golang.org/x/net/http2 to 0.51.0.

Affected software

ProductAffectedFixed in
golang.org/x/netgolang.org/x/net/http2Affected
  • >=0.50.0 <0.51.0
Fixed in
  • 0.51.0
Gogolang.org/x/net/http2pkg:golang/golang.org/x/net/http2Other threatsAffected
  • =0.50.0
Fixed in–
Gogolang.org/x/net/http2pkg:golang/golang.org/x/net/http2Other threatsAffected
  • >=0.50.0 <0.51.0
Fixed in
  • 0.51.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fixed version of Red Hat OpenShift Pipelines Operator is available in release 1.21.2. Users should upgrade to this version to remediate the vulnerability. No other effective mitigations meeting Red Hat's criteria are currently available.

Description

CVE-2026-27141 is a vulnerability in the golang.org/x/net/http2 package used by Red Hat OpenShift Pipelines Operator. It allows a remote attacker to cause a denial of service (DoS) by sending specially crafted HTTP/2 frames that trigger a null pointer dereference, crashing the server. The issue affects processing of HTTP/2 frame types 0x0a through 0x0f. The vulnerability is addressed in Red Hat OpenShift Pipelines release 1.21.2.

References

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