# SUSE-SU-2026:22340-1: mutt security update

SUSE-SU-2026:22340-1, released June 22, 2026, fixes 6 CVEs in mutt (version 2.2.16-160000.2.1). None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/linux/suse-su-2026-22340-1
- Platform: Linux
- Released: Jun 22, 2026
- Priority: Routine (Closes 6 CVEs, none high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/SUSE-SU-2026:22340-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [mutt](https://patchblox.com/security/data/product/linux/mutt.md) | sles 16.0 | 2.2.16-160000.2.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-43863](https://patchblox.com/security/data/cve/CVE-2026-43863.md) | Routine | mutt: infinite loop in `data_object_to_stream` in `crypt-gpgme.c` (bsc#1263893). | 3.7 | 0.0020 |  |
| [CVE-2026-43859](https://patchblox.com/security/data/cve/CVE-2026-43859.md) | Routine | mutt: `strfcpy` used instead of `memcpy` for the IMAP `auth_cram` MD5 digest (bsc#1263897). | 3.7 | 0.0016 |  |
| [CVE-2026-43860](https://patchblox.com/security/data/cve/CVE-2026-43860.md) | Routine | mutt: truncation of `hash_passwd` by one byte for IMAP `auth_cram` MD5 digest (bsc#1263896). | 3.7 | 0.0016 |  |
| [CVE-2026-43861](https://patchblox.com/security/data/cve/CVE-2026-43861.md) | Routine | mutt: missing check for `\0` in `url_pct_decode` (bsc#1263895). | 3.7 | 0.0016 |  |
| [CVE-2026-43862](https://patchblox.com/security/data/cve/CVE-2026-43862.md) | Routine | mutt: mishandling of the `imap_auth_gss` security level (bsc#1263894). | 3.7 | 0.0016 |  |
| [CVE-2026-43864](https://patchblox.com/security/data/cve/CVE-2026-43864.md) | Routine | mutt: NULL pointer dereference in function `show_sig_summary` (bsc#1263892). | 2.5 | 0.0010 |  |

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Data as of 2026-11-11T01:43:54Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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