Red Hat Security Advisory: dovecot security update

Fixed packages 1

Vulnerabilities 1

• Medium 4.3
  CVE-2026-42006

  An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incompl…

  Open-Xchange OX Dovecot Pro dovecot dovecot Debian Ubuntu Azure Linux Alpine
  May 12, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2476476
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_44357.json
• report
  https://access.redhat.com/security/cve/CVE-2026-42006
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-42006
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-42006
• article
  https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0002.json