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CVE-2026-42245VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Affects Red HatSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-42245· Low 2.3

Not known to be exploited · CVSS 2.3 Low · fixed in Red Hat package updates : update Red Hat net-imap when convenient.

Data as of 6 Nov 2026, 02:03 UTC

CVSS 4.0 base score
2.3Low
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 0.6.4, 0.5.14, 0.4.24
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 May 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 5 Nov 2026.

What to do

Upgrade net-imap to 0.6.4, 0.5.14 or 0.4.24; net-imap to 0.4.24.

Affected software

ProductAffectedFixed in
rubynet-imapAffected
  • >=0.6.0 <0.6.4
Fixed in
  • 0.6.4
rubynet-imapAffected
  • >=0.5.0 <0.5.14
Fixed in
  • 0.5.14
rubynet-imapAffected
  • <0.4.24
Fixed in
  • 0.4.24
RubyGemsnet-imappkg:gem/net-imapOther threatsAffected
  • <0.4.24
Fixed in
  • 0.4.24

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

AI-suggested

A security update is available and should be applied to affected systems. The updated ruby3.4 packages (version 3.4.10-31.hum1) and related gems should be installed from the official Red Hat repositories as detailed in the advisory. No additional mitigation steps are indicated beyond applying the update.

Description

Red Hat has released a security update for Red Hat Hardened Images RPMs, specifically addressing multiple vulnerabilities in ruby3.4 and related packages. The update includes fixes for CVE-2026-42245, CVE-2026-42246, CVE-2026-42256, and CVE-2026-47242. These vulnerabilities affect various ruby3.4 RPMs across multiple architectures. The advisory provides updated package versions to mitigate these issues.

References

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