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CVE-2026-111943VulnerabilityPublished Updated

Red Hat Security Advisory: Release of components for Service Telemetry Framework 1.5.7

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-111943· Medium

Not known to be exploited : upgrade Red Hat x509 to 1.27.3 or 1.26.10 when convenient.

Data as of 30 Oct 2026, 02:59 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in 1.27.3, 1.26.10

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Oct 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 crypto/x509 to 1.27.3 or 1.26.10.

Affected software

ProductAffectedFixed in
Go standard librarycrypto/x509Affected
  • >=1.27.0-0 <1.27.3
Fixed in
  • 1.27.3
Go standard librarycrypto/x509Affected
  • <1.26.10
Fixed in
  • 1.26.10
Gocrypto/x509pkg:golang/crypto/x509Other threatsAffected
  • <1.26.10
  • >=1.27.0-0 <1.27.3
Fixed in
  • 1.26.10
  • 1.27.3

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 Service Telemetry Framework components version 1.5.7 containing the fix for this vulnerability. Users should update to this version by pulling the updated container images from the Red Hat Container Registry and amending Dockerfiles or scripts to reference the new images. No other mitigation is required as the fix addresses the certificate validation flaw.

Description

A vulnerability in Go's crypto/x509 package used by Red Hat's Service Telemetry Framework (STF) allows man-in-the-middle attacks via untrusted intermediate certificates. The certificate verification process fails to block trust in intermediate certificates from compromised Certificate Authorities, enabling attackers to impersonate legitimate servers during secure connections. This flaw affects Go-based clients or servers relying on standard certificate verification and requires specific network positioning and attacker-controlled certificates. Red Hat has released STF components version 1.5.7 to address this issue.

References

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