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CVE-2026-43864

Medium priority
Needs evaluation

(mutt before 2.3.2 has a show_sig_summary NULL pointer dereference.)

1 affected package

mutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-43863

Medium priority
Needs evaluation

(mutt before 2.3.2 has an infinite loop in data_object_to_stream in cry ...)

1 affected package

mutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-43862

Medium priority
Needs evaluation

(In mutt before 2.3.2, the imap_auth_gss security level is mishandled.)

1 affected package

mutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-43861

Medium priority
Needs evaluation

(mutt before 2.3.2 does not check for '\0' in url_pct_decode.)

1 affected package

mutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-43860

Medium priority
Needs evaluation

(mutt before 2.3.2 sometimes truncates the hash_passwd by one byte for ...)

1 affected package

mutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-43859

Medium priority
Needs evaluation

(mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMA ...)

1 affected package

mutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2024-49395

Low priority
Needs evaluation

In mutt and neomutt, PGP encryption does not use the --hidden-recipient mode which may leak the Bcc email header field by inferring from the recipients info.

2 affected packages

neomutt, mutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
neomutt Needs evaluation Needs evaluation Needs evaluation Ignored Needs evaluation
mutt Ignored Ignored Ignored Ignored Ignored
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CVE-2024-49394

Low priority

Some fixes available 3 of 13

In mutt and neomutt the In-Reply-To email header field is not protected by cryptographic signing which allows an attacker to reuse an unencrypted but signed email message to impersonate the original sender.

2 affected packages

mutt, neomutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Ignored Ignored Ignored Ignored Ignored
neomutt Not affected Fixed Fixed Fixed Ignored
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CVE-2024-49393

Low priority

Some fixes available 3 of 13

In neomutt and mutt, the To and Cc email headers are not validated by cryptographic signing which allows an attacker that intercepts a message to change their value and include himself as a one of the recipients to compromise...

2 affected packages

mutt, neomutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Ignored Ignored Ignored Ignored Ignored
neomutt Not affected Fixed Fixed Fixed Ignored
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CVE-2023-4875

Medium priority
Fixed

Null pointer dereference when composing from a specially crafted draft message in Mutt >1.5.2 <2.2.12

1 affected package

mutt

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mutt Fixed Fixed Fixed
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