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Vulnerabilities

Vulnerability · CVE-2026-43862

In mutt before 2.3.2, the imap_auth_gss security level is mishandled.

Published May 4, 2026 · catalog updated Jun 17, 2026 · In mutt before 2.3.2,

Check if you run it

No confirmed exploitation is on record for CVE-2026-43862. EPSS is 0.26%. Act only if a listed version of In mutt before 2.3.2, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (In mutt before 2.3.2,).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low3.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.26%
Remediation
Not established
Affected products
See sources for product scope

In mutt before 2.3.2, the imap_auth_gss security level is mishandled.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-43862

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-43862. EPSS is 0.26%. Act only if a listed version of In mutt before 2.3.2, is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-843: Access of Resource Using Incompatible Type (Type Confusion). EPSS 0.26%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 4, 2026 · NIST NVD

    Detected

    In mutt before 2.3.2, the imap_auth_gss security level is mishandled.

  2. Jun 17, 2026 · NIST NVD

    Updated

    In mutt before 2.3.2, the imap_auth_gss security level is mishandled.

Sources

  • CVE.orgVulnerability recordCVE-2026-43862

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-43862

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-43862

    In mutt before 2.3.2, the imap_auth_gss security level is mishandled.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.