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CVE-2026-4833

Medium priority
Needs evaluation

A weakness has been identified in Orc discount up to 3.0.1.2. This issue affects the function compile of the file markdown.c of the component Markdown Handler. This manipulation causes uncontrolled recursion. The attack is...

1 affected package

discount

Package 16.04 LTS
discount Needs evaluation
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CVE-2026-27860

Medium priority
Not affected

v2.4/v3.1 regression: auth-ldap is not escaping usernames. If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and...

1 affected package

dovecot

Package 16.04 LTS
dovecot Not affected
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CVE-2026-27859

Medium priority
Vulnerable

v3.0.2+ regression: Message headers MIME parameter parsing can cause excessive CPU usage. A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message...

1 affected package

dovecot

Package 16.04 LTS
dovecot Vulnerable
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CVE-2026-27858

Medium priority
Vulnerable

managesieve-login out-of-memory DoS. Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory. Attacker can force managesieve-login to be unavailable by...

1 affected package

dovecot

Package 16.04 LTS
dovecot Vulnerable
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CVE-2026-27857

Medium priority
Not affected

imap-login: Excessive memory usage DoS. Sending "NOOP (((...)))" command with 4000 parenthesis open+close results in ~1MB extra memory usage. Longer commands will result in client disconnection. This 1 MB can be left allocated for...

1 affected package

dovecot

Package 16.04 LTS
dovecot Not affected
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CVE-2026-27856

Medium priority
Not affected

doveadm: Credentials verified without timing safety. Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring...

1 affected package

dovecot

Package 16.04 LTS
dovecot Not affected
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CVE-2026-27855

Medium priority
Vulnerable

auth: OTP driver vulnerable to replay attack. Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is altered in passdb, then OTP credentials can be cached so...

1 affected package

dovecot

Package 16.04 LTS
dovecot Vulnerable
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CVE-2026-24031

Medium priority
Not affected

v2.4/v3.1 regression: SQL injection allows bypassing authentication. Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user...

1 affected package

dovecot

Package 16.04 LTS
dovecot Not affected
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CVE-2026-0394

Medium priority
Vulnerable

auth: Path traversal in passwd-file passdb using `%d` (domain) escapes base directory and opens `/etc/passwd`Pre-auth path traversal in passwd-file passdb using `%d` (domain) escapes base directory and opens `/etc/passwd`. When...

1 affected package

dovecot

Package 16.04 LTS
dovecot Vulnerable
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CVE-2025-67030

Medium priority
Needs evaluation

Directory Traversal vulnerability in the extractFile method of org.codehaus.plexus.util.Expand in plexus-utils before 6d780b3378829318ba5c2d29547e0012d5b29642. This allows an attacker to execute arbitrary code

1 affected package

plexus-utils

Package 16.04 LTS
plexus-utils Needs evaluation
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