SUSE-SU-2026:23595-1: dovecot24&distro=SUSE Linux Enterprise Server 16.0 SUSE Linux Enterprise

Vulnerability summary

SUSE-SU-2026:23595-1 is a vulnerability in dovecot24&distro=SUSE Linux Enterprise Server 16.0 SUSE Linux Enterprise with no CVSS score yet.

Timeline

1. 01-09-2026
   PublishedVulnerability first disclosed.
2. 29-09-2026
   Last modifiedVulnerability information updated.

Description

Security update for dovecot24 This update for dovecot24 fixes the following issues: Update to 2.4.5. - CVE-2026-33263: `submission-login`: panic when `mail_max_userip_connections` is reached (bsc#1276794). - CVE-2026-27852: DoS by sending mail with bad header (bsc#1276799). - CVE-2026-33604: SMTP smuggling via missing dot-stuffing after bare carriage return (bsc#1276802). - CVE-2026-33605: `managesieve-login`: pre-auth crash (bsc#1276809). - CVE-2026-33606: `dsync`: mail content can cause `dsync` protocol injection (bsc#1276800). - CVE-2026-33607: IMAP `LIST` `match_sub()` exponential backtracking leading to CPU denial of service (bsc#1276795). - CVE-2026-40013: stack buffer underflow in `pigeonhole` `ManageSieve` `CHECKSCRIPT/PUTSCRIPT` (bsc#1276807). - CVE-2026-40014: CPU DoS via crafted references header (bsc#1276804). - CVE-2026-40015: `imap-hibernate` can be crashed (bsc#1276812). - CVE-2026-40017: CPU DoS via CRC32 hash collision in `strmap` (bsc#1276813). - CVE-2026-40018: MySQL multi-byte escaping performed incorrectly (bsc#1276810). - CVE-2026-40203: IMAP compression can reveal whether a small synced email body matches sender-chosen text (bsc#1276815). - CVE-2026-40204: `lda_mailbox_autocreate` can bypass ACL restrictions (bsc#1276819). - CVE-2026-40205: OAuth2 `passdb` scope enforcement bypass via OR semantics in remote validation path (bsc#1276820). - CVE-2026-42007: `sieve` `editheader` RCE (bsc#1276817). - CVE-2026-42008: `XCLIENT FORWARD= bare` token not namespaced (bsc#1276824). - CVE-2026-42391: `imap`: pre-login memory/CPU growth with `ID` command (bsc#1276835). - CVE-2026-42392: `imap-urlauth` leaks memory into user-visible error messages (bsc#1276829). - CVE-2026-42393: `doveadm_password` or api key length can be leaked with timing comparisons (bsc#1276827). - CVE-2026-52687: `imap`: `COMPRESS ZSTD` can cause excessive memory usage (bsc#1276837). - CVE-2026-42395: single NUL-byte `XCLIENT FORWARD` payload crashes (bsc#1276826). - CVE-2026-52681: `sieve` resource usage tracking lost when active script changes (bsc#1276828). - CVE-2026-73208: `auth`: `db-oauth2`: `aud` claim used as fallback for missing scope claim (bsc#1276830). - CVE-2026-73209: `imap-login` crash due to self-recursion on zero-output decompress chunks (bsc#1276833).

No weakness data has been published for this record.