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CVE-2026-4438

Medium priority
Needs evaluation

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the...

2 affected packages

glibc, eglibc

Package 20.04 LTS
glibc Needs evaluation
eglibc
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CVE-2026-4437

Medium priority
Needs evaluation

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from the configured DNS server,...

2 affected packages

glibc, eglibc

Package 20.04 LTS
glibc Needs evaluation
eglibc
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CVE-2026-4371

Medium priority
Ignored

A malicious mail server could send malformed strings with negative lengths, causing the parser to read memory outside the buffer. If a mail server or connection to a mail server were compromised, an attacker could cause the parser...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package 20.04 LTS
firefox
thunderbird
mozjs38
mozjs52 Ignored
mozjs68 Ignored
mozjs78
mozjs91
mozjs102
mozjs115
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CVE-2026-3889

Medium priority
Ignored

Spoofing issue in Thunderbird. This vulnerability affects Thunderbird < 149 and Thunderbird < 140.9.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package 20.04 LTS
firefox
thunderbird
mozjs38
mozjs52 Ignored
mozjs68 Ignored
mozjs78
mozjs91
mozjs102
mozjs115
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CVE-2026-34085

Medium priority
Needs evaluation

(fontconfig before 2.17.1 has an off-by-one error in allocation during ...)

1 affected package

fontconfig

Package 20.04 LTS
fontconfig Needs evaluation
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CVE-2026-33699

Medium priority
Needs evaluation

[Unknown description]

2 affected packages

pypdf, pypdf2

Package 20.04 LTS
pypdf
pypdf2 Needs evaluation
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CVE-2026-33554

Medium priority
Needs evaluation

ipmi-oem in FreeIPMI before 1.16.17 has exploitable buffer overflows on response messages. The Intelligent Platform Management Interface (IPMI) specification defines a set of interfaces for platform management. It is implemented...

1 affected package

freeipmi

Package 20.04 LTS
freeipmi Needs evaluation
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CVE-2026-33526

Medium priority
Needs evaluation

[Unknown description]

2 affected packages

squid, squid3

Package 20.04 LTS
squid Needs evaluation
squid3
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CVE-2026-33515

Medium priority
Needs evaluation

[Unknown description]

2 affected packages

squid, squid3

Package 20.04 LTS
squid Needs evaluation
squid3
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CVE-2026-33347

Medium priority
Needs evaluation

league/commonmark is a PHP Markdown parser. From version 2.3.0 to before version 2.8.2, the DomainFilteringAdapter in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the...

1 affected package

php-league-commonmark

Package 20.04 LTS
php-league-commonmark Needs evaluation
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