{"id":"CVE-2025-59028","aliases":["ALPINE-CVE-2025-59028","AZL-81686","DEBIAN-CVE-2025-59028","EUVD-2025-209088","GHSA-9q9x-wwfr-fxqm","SUSE-SU-2026:21208-1","SUSE-SU-2026:4139-1","UBUNTU-CVE-2025-59028","USN-8136-1","openSUSE-SU-2026:10442-1","openSUSE-SU-2026:20554-1"],"status":"published","title":"When sending invalid base64 SASL data, login process is disconnected from the auth server,...","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are 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Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59028","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-9q9x-wwfr-fxqm"},{"url":"https://security.alpinelinux.org/vuln/CVE-2025-59028","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59028.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-59028","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202621208-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1260893","tags":["report"]},{"url":"https://bugzilla.suse.com/1260894","tags":["report"]},{"url":"https://bugzilla.suse.com/1260895","tags":["report"]},{"url":"https://bugzilla.suse.com/1260896","tags":["report"]},{"url":"https://bugzilla.suse.com/1260897","tags":["report"]},{"url":"https://bugzilla.suse.com/1260898","tags":["report"]},{"url":"https://bugzilla.suse.com/1260899","tags":["report"]},{"url":"https://bugzilla.suse.com/1260900","tags":["report"]},{"url":"https://bugzilla.suse.com/1260901","tags":["report"]},{"url":"https://bugzilla.suse.com/1260902","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2025-59028","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-59031","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-59032","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-24031","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-27855","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-27856","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-27857","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-27858","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-27859","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-27860","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20264139-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1229183","tags":["report"]},{"url":"https://bugzilla.suse.com/1229184","tags":["report"]},{"url":"https://bugzilla.suse.com/1265147","tags":["report"]},{"url":"https://bugzilla.suse.com/1265148","tags":["report"]},{"url":"https://bugzilla.suse.com/1265149","tags":["report"]},{"url":"https://bugzilla.suse.com/1265150","tags":["report"]},{"url":"https://bugzilla.suse.com/1276794","tags":["report"]},{"url":"https://bugzilla.suse.com/1276795","tags":["report"]},{"url":"https://bugzilla.suse.com/1276799","tags":["report"]},{"url":"https://bugzilla.suse.com/1276800","tags":["report"]},{"url":"https://bugzilla.suse.com/1276802","tags":["report"]},{"url":"https://bugzilla.suse.com/1276804","tags":["report"]},{"url":"https://bugzilla.suse.com/1276809","tags":["report"]},{"url":"https://bugzilla.suse.com/1276811","tags":["report"]},{"url":"https://bugzilla.suse.com/1276812","tags":["report"]},{"url":"https://bugzilla.suse.com/1276815","tags":["report"]},{"url":"https://bugzilla.suse.com/1276817","tags":["report"]},{"url":"https://bugzilla.suse.com/1276820","tags":["report"]},{"url":"https://bugzilla.suse.com/1276824","tags":["report"]},{"url":"https://bugzilla.suse.com/1276826","tags":["report"]},{"url":"https://bugzilla.suse.com/1276827","tags":["report"]},{"url":"https://bugzilla.suse.com/1276828","tags":["report"]},{"url":"https://bugzilla.suse.com/1276830","tags":["report"]},{"url":"https://bugzilla.suse.com/1276833","tags":["report"]},{"url":"https://bugzilla.suse.com/1276835","tags":["report"]},{"url":"https://bugzilla.suse.com/1276837","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2024-23184","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-23185","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-27852","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-33263","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-33603","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-33604","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-33605","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-33606","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-33607","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-40014","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-40015","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-40016","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-40019","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-40020","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-40203","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-40205","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42006","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42007","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42008","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42391","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42393","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42395","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-52681","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-52687","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-73208","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-73209","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2025-59028","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-59028","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8136-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-59031","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2025-59032","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-0394","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-24031","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-27855","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-27856","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-27857","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-27858","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-27859","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-27860","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-59028","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T08:10:15.246Z","modified":"2026-03-27T19:43:08.685Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:47.812946Z"}],"euvd":[{"id":"EUVD-2025-209088","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T08:10:15Z","modified":"2026-03-27T19:43:08Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T19:25:27.277964Z"}],"ghsa":[{"id":"GHSA-9q9x-wwfr-fxqm","title":"When sending invalid base64 SASL data, login process is disconnected from the auth server,...","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T09:31:17Z","modified":"2026-03-27T09:31:18Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:06:54.074781Z"}],"nvd":[{"id":"CVE-2025-59028","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T09:16:18.62Z","modified":"2026-10-07T09:10:00.16Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:12:01.641503Z"}],"osv":[{"id":"ALPINE-CVE-2025-59028","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T09:16:18.62Z","modified":"2026-08-27T22:18:02.994594671Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:27:50.269992Z"},{"id":"CVE-2025-59028","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T08:10:15.246Z","modified":"2026-10-28T02:30:50.107647377Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:44:51.190588Z"},{"id":"DEBIAN-CVE-2025-59028","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T09:16:18.62Z","modified":"2026-10-08T09:47:35.144623697Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"UBUNTU-CVE-2025-59028","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T00:00:00Z","modified":"2026-05-04T10:32:45.151259Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:50.817402Z"},{"id":"AZL-81686","title":"CVE-2025-59028 affecting package dovecot 2.3.20-1","description":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.","status":"published","published":"2026-03-27T09:16:18Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:24.988217Z"},{"id":"openSUSE-SU-2026:10442-1","title":"dovecot24-2.4.3-1.1 on GA media","description":"These are all security issues fixed in the dovecot24-2.4.3-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-03-27T00:00:00Z","modified":"2026-03-28T08:45:58.692143Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"openSUSE-SU-2026:20554-1","title":"Security update for dovecot24","description":"This update for dovecot24 fixes the following issues:\n\n- Update to v2.4.3\n- CVE-2025-59028: Invalid base64 authentication can cause DoS for other logins (bsc#1260894).\n- CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during indexing\n  (bsc#1260895).\n- CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a client (bsc#1260902).\n- CVE-2026-24031: SQL injection possible if auth_username_chars is configured empty. Fixed escaping to always happen.\n  v2.4 regression (bsc#1260896).\n- CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).\n- CVE-2026-27856: Doveadm credentials were not checked using timing-safe checking function (bsc#1260899).\n- CVE-2026-27857: sending excessive parenthesis causes imap-login to use excessive memory (bsc#1260898).\n- CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of memory during authentication (bsc#1260901).\n- CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can excessive CPU usage (bsc#1260897).\n- CVE-2026-27860: LDAP query injection possible if auth_username_chars is configured empty. Fixed escaping to always\n  happen. v2.4 regression (bsc#1260893).\n","status":"published","published":"2026-04-16T13:10:27Z","modified":"2026-04-22T18:27:08.975719Z","updated_at":"2026-11-02T16:58:41.463445Z"},{"id":"SUSE-SU-2026:21208-1","title":"Security update for dovecot24","description":"This update for dovecot24 fixes the following issues:\n\n- Update to v2.4.3\n- CVE-2025-59028: Invalid base64 authentication can cause DoS for other logins (bsc#1260894).\n- CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during indexing\n  (bsc#1260895).\n- CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a client (bsc#1260902).\n- CVE-2026-24031: SQL injection possible if auth_username_chars is configured empty. Fixed escaping to always happen.\n  v2.4 regression (bsc#1260896).\n- CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).\n- CVE-2026-27856: Doveadm credentials were not checked using timing-safe checking function (bsc#1260899).\n- CVE-2026-27857: sending excessive parenthesis causes imap-login to use excessive memory (bsc#1260898).\n- CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of memory during authentication (bsc#1260901).\n- CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can excessive CPU usage (bsc#1260897).\n- CVE-2026-27860: LDAP query injection possible if auth_username_chars is configured empty. Fixed escaping to always\n  happen. v2.4 regression (bsc#1260893).\n","status":"published","published":"2026-04-16T13:15:05Z","modified":"2026-04-22T18:26:16.302742Z","updated_at":"2026-11-02T15:54:02.312556Z"},{"id":"SUSE-SU-2026:4139-1","title":"Security update for dovecot23","description":"This update for dovecot23 fixes the following issues:\n\n- CVE-2024-23184: parsing of messages containing many address headers (From, To, Cc, Bcc, etc.) could be excessively CPU\n  intensive (bsc#1229184).\n- CVE-2024-23185: large headers can cause resource exhaustion when parsing message (bsc#1229183).\n- CVE-2025-59028: Invalid base64 authentication can cause DoS for other logins (bsc#1260894).\n- CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during indexing\n  (bsc#1260895).\n- CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a client (bsc#1260902).\n- CVE-2026-27852: DoS by sending mail with bad header (bsc#1276799).\n- CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).\n- CVE-2026-27856: Doveadm credentials were not checked using timing-safe checking function (bsc#1260899).\n- CVE-2026-27857: sending excessive parenthesis causes imap-login to use excessive memory (bsc#1260898).\n- CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of memory during authentication (bsc#1260901).\n- CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can excessive CPU usage (bsc#1260897).\n- CVE-2026-33263: submission-login: Panic when mail_max_userip_connections is reached (bsc#1276794).\n- CVE-2026-33603: login: base64 input can contain tabs that bypass IPC protection (bsc#1265147).\n- CVE-2026-33604: SMTP Smuggling via Missing Dot-Stuffing (bsc#1276802).\n- CVE-2026-33605: managesieve-login: Pre-auth crash (bsc#1276809).\n- CVE-2026-33606: dsync: Mail content can cause dsync protocol injection (bsc#1276800).\n- CVE-2026-33607: IMAP LIST match_sub() Exponential Backtracking -- CPU Denial of Service (bsc#1276795).\n- CVE-2026-40014: CPU DoS via Crafted References Header (bsc#1276804).\n- CVE-2026-40015: imap-hibernate can be crashed (bsc#1276812).\n- CVE-2026-40016: Sieve :contains/:matches O(NxM) substring match bypasses sieve_max_cpu_time limit (bsc#1265148).\n- CVE-2026-40019: managesieve-login pre-auth infinite loop (bsc#1276811).\n- CVE-2026-40020: IMAP folders can be shared-spammed to everyone (bsc#1265149).\n- CVE-2026-40203: IMAP Compression Can Reveal Whether a Small Synced Email Body Matches Sender-Chosen Text\n  (bsc#1276815).\n- CVE-2026-40205: OAuth2 passdb scope enforcement bypass via OR semantics in remote validation path (bsc#1276820).\n- CVE-2026-42006: imap-login: uncontrolled memory usage with excessive bracing over IMAP (bsc#1265150).\n- CVE-2026-42007: editheader RCE (bsc#1276817).\n- CVE-2026-42008: XCLIENT FORWARD= bare token not namespaced (bsc#1276824).\n- CVE-2026-42391: imap: Pre-login memory/CPU growth with ID command (bsc#1276835).\n- CVE-2026-42393: doveadm_password or api key length can still be leaked with timing comparisons (bsc#1276827).\n- CVE-2026-42395: Single NUL-Byte XCLIENT FORWARD Payload Crashes (bsc#1276826).\n- CVE-2026-52681: Sieve resource usage tracking lost when active script changes (bsc#1276828).\n- CVE-2026-52687: IMAP: COMPRESS ZSTD can cause excessive memory usage (bsc#1276837).\n- CVE-2026-73208: auth: db-oauth2: aud claim used as fallback for missing scope claim (bsc#1276830).\n- CVE-2026-73209: imap-login crash: Self-recursion on zero-output decompress chunks (bsc#1276833).\n\nChanges for dovecot23:\n\n- Update to version 2.3.21.1.\n","status":"published","published":"2026-09-14T07:22:32Z","modified":"2026-09-28T18:23:12.561527353Z","updated_at":"2026-11-02T15:54:05.392906Z"},{"id":"USN-8136-1","title":"dovecot vulnerabilities","description":"It was discovered that Dovecot incorrectly handled invalid base64 SASL data.\nAn attacker could possibly use this issue to cause a denial of service. This\nissue only affected Ubuntu 25.10. (CVE-2025-59028)\n\nIt was discovered that Dovecot script decode2text.sh incorrectly handled zip\nfiles. An attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2025-59031)\n\nIt was discovered that Dovecot incorrectly handled certain AUTHENTICATE\nrequests. An attacker could possibly use this issue to cause a denial of\nservice. (CVE-2025-59032)\n\nIt was discovered that Dovecot incorrectly handled certain SQL based\nauthentication. An attacker could possibly use this issue to bypass\nauthentication. This issue only affected Ubuntu 25.10. (CVE-2026-24031)\n\nIt was discovered that Dovecot incorrectly handled certain LDAP based\nauthentication. An attacker could possibly use this issue to bypass\nrestrictions and allow probing of LDAP structure. This issue only affected\nUbuntu 25.10. (CVE-2026-27860)\n\nIt was discovered that Dovecot is vulnerable to replay attack under\ncertain conditions. An attacker could possibly use this issue to bypass\nauthentication. (CVE-2026-27855)\n\nIt was discovered that Dovecot is vulnerable to a timing attack under\ncertain conditions. An attacker could possibly use this issue to bypass\nauthentication. (CVE-2026-27856)\n\nIt was discovered that Dovecot incorrectly handled certain IMAP login\nrequests. An attacker could possibly use this issue to cause a denial of\nservice. (CVE-2026-27857)\n\nIt was discovered that Dovecot incorrectly handled certain specially\ncrafted messages. An attacker could possibly use this issue to cause a\ndenial of service. (CVE-2026-27858)\n\nIt was discovered that Dovecot incorrectly handled certain specially\ncrafted mail messages. An attacker could possibly use this issue to\ncause a denial of service. (CVE-2026-27859)\n\nIt was discovered that Dovecot incorrectly handles file paths. A attacker\ncould possibly use this issue to perform a path traversal and obtain or\nmodify arbitrary files. This issue only affected Ubuntu 22.04 LTS and\nUbuntu 24.04 LTS. (CVE-2026-0394)","status":"published","published":"2026-03-31T09:48:59Z","modified":"2026-06-30T18:15:36.137642492Z","updated_at":"2026-11-02T16:58:22.951676Z"}]}}