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CVE-2026-27142VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPM Release

Affects Red HatSource GCVE Database

0
Authoritative record:CVE-2026-27142· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium : upgrade Red Hat template to 1.26.1 or 1.25.8 when convenient.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.26.1, 1.25.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade html/template to 1.26.1 or 1.25.8.

Affected software

ProductAffectedFixed in
Go standard libraryhtml/templateAffected
  • >=1.26.0-0 <1.26.1
Fixed in
  • 1.26.1
Go standard libraryhtml/templateAffected
  • <1.25.8
Fixed in
  • 1.25.8
Gohtml/templatepkg:golang/html/templateOther threatsAffected
  • <1.25.8
  • >=1.26.0-0 <1.26.1
Fixed in
  • 1.25.8
  • 1.26.1
Gogithub.com/golang/go/src/html/templatepkg:golang/github.com/golang/go/src/html/templateOther threatsAffected
  • =0
  • =1.26.0-0
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 states that existing mitigation options do not meet their criteria for ease of use, applicability, or stability. The GODEBUG environment variable htmlmetacontenturlescape can be set to 0 to disable URL escaping in meta content attributes, but this is not recommended as a reliable mitigation. No additional vendor-recommended mitigations are provided at this time.

Description

Red Hat Hardened Images RPM Release

References

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