# erlang-diameter 1:27.3.4.6+dfsg-1ubuntu0.2: erlang-diameter 1:27.3.4.6+dfsg-1ubuntu0.2 for Ubuntu 26.04.1 LTS (resolute)

erlang-diameter 1:27.3.4.6+dfsg-1ubuntu0.2, released September 22, 2026, fixes 27 CVEs in erlang-diameter. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-resolute-erlang-diameter-1-27.3.4.6-dfsg-1ubuntu0.2
- Platform: Linux
- Released: Sep 22, 2026
- Priority: Urgent (Closes CVE-2026-89422, rated Critical)
- CVEs: 27, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [erlang-diameter](https://patchblox.com/security/data/product/linux/erlang-diameter.md) | Ubuntu 26.04.1 LTS (resolute) | 1:27.3.4.6+dfsg-1ubuntu0.2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-89422](https://patchblox.com/security/data/cve/CVE-2026-89422.md) | Urgent | TLS 1.3 client skips server authentication when ServerHello carries an unsolicited pre_shared_key extension | n/a | 0.0046 |  |
| [CVE-2026-28808](https://patchblox.com/security/data/cve/CVE-2026-28808.md) | High | ScriptAlias CGI targets bypass directory auth in inets httpd (mod_auth vs mod_cgi path mismatch) | 9.8 | 0.0057 |  |
| [CVE-2026-55952](https://patchblox.com/security/data/cve/CVE-2026-55952.md) | High | erlang-snmp: The Erlang/OTP ssl application does not validate that the PSK identity list and binder list carried in a TLS 1.3 Clie... | 7.5 | 0.0055 |  |
| [CVE-2026-49759](https://patchblox.com/security/data/cve/CVE-2026-49759.md) | High | Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash | 8.2 | 0.0050 |  |
| [CVE-2026-68956](https://patchblox.com/security/data/cve/CVE-2026-68956.md) | High | SSH daemon allocates unbounded idle session channels, bypassing max_channels | n/a | 0.0038 |  |
| [CVE-2026-42790](https://patchblox.com/security/data/cve/CVE-2026-42790.md) | High | nameConstraints DNS bypass via subject CommonName fallback in public_key hostname verification | 8.1 | 0.0036 |  |
| [CVE-2026-65634](https://patchblox.com/security/data/cve/CVE-2026-65634.md) | High | Superlinear CPU denial of service in Erlang/OTP ASN.1 OBJECT IDENTIFIER decoder | n/a | 0.0027 |  |
| [CVE-2026-32144](https://patchblox.com/security/data/cve/CVE-2026-32144.md) | High | erlang: Improper Certificate Validation vulnerability in Erlang OTP public_key (pubkey_ocsp module) allows OCSP designated-re... | 7.4 | 0.0021 |  |
| [CVE-2026-23943](https://patchblox.com/security/data/cve/CVE-2026-23943.md) | Routine | Pre-auth SSH DoS via unbounded zlib inflate | 5.3 | 0.0074 |  |
| [CVE-2026-74994](https://patchblox.com/security/data/cve/CVE-2026-74994.md) | Routine | inets, httpd: Authentication Bypass via Directory Namespace Collapse in httpd mod_auth | n/a | 0.0065 |  |
| [CVE-2026-21620](https://patchblox.com/security/data/cve/CVE-2026-21620.md) | Routine | erlang: Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file... | n/a | 0.0059 |  |
| [CVE-2026-23942](https://patchblox.com/security/data/cve/CVE-2026-23942.md) | Routine | SFTP root escape via component-agnostic prefix check in ssh_sftpd | 5.4 | 0.0041 |  |
| [CVE-2026-55950](https://patchblox.com/security/data/cve/CVE-2026-55950.md) | Routine | erlang26: time-of-check time-of-use race condition allows an unauthenticated remote attacker to crash all active | 5.9 | 0.0040 |  |
| [CVE-2026-42789](https://patchblox.com/security/data/cve/CVE-2026-42789.md) | Routine | Non-CA certificate accepted as intermediate issuer in public_key path validation | 4.8 | 0.0038 |  |
| [CVE-2026-32147](https://patchblox.com/security/data/cve/CVE-2026-32147.md) | Routine | SFTP chroot bypass via path traversal in SSH_FXP_FSETSTAT | 4.3 | 0.0037 |  |
| [CVE-2026-48856](https://patchblox.com/security/data/cve/CVE-2026-48856.md) | Routine | httpc leaks Authorization header to cross-origin redirect targets | 6.5 | 0.0034 |  |
| [CVE-2026-54886](https://patchblox.com/security/data/cve/CVE-2026-54886.md) | Routine | SSH SFTP server denial of service via extended channel data infinite loop | 4.3 | 0.0033 |  |
| [CVE-2026-42791](https://patchblox.com/security/data/cve/CVE-2026-42791.md) | Routine | erlang: OCSP response verification in the `public_key` application does not check the validity period of the | 3.7 | 0.0033 |  |
| [CVE-2026-48855](https://patchblox.com/security/data/cve/CVE-2026-48855.md) | Routine | SFTP READLINK Leaks Absolute Backend Filesystem Path When Root Is Configured | 6.5 | 0.0030 |  |
| [CVE-2026-28810](https://patchblox.com/security/data/cve/CVE-2026-28810.md) | Routine | Predictable DNS Transaction IDs Enable Cache Poisoning in Built-in Resolver | 3.7 | 0.0028 |  |
| [CVE-2026-53422](https://patchblox.com/security/data/cve/CVE-2026-53422.md) | Routine | erlang: SFTP `REALPATH` path-existence oracle allows filesystem enumeration outside configured root | 4.3 | 0.0026 |  |
| [CVE-2026-54887](https://patchblox.com/security/data/cve/CVE-2026-54887.md) | Routine | erlang: Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl (DTLS server) allows predictable DTLS cookie computa... | 4.8 | 0.0025 |  |
| [CVE-2026-48858](https://patchblox.com/security/data/cve/CVE-2026-48858.md) | Routine | ftp client PASV response IP not validated against control peer, enabling SSRF and FTP bounce attacks | 6.5 | 0.0023 |  |
| [CVE-2026-48860](https://patchblox.com/security/data/cve/CVE-2026-48860.md) | Routine | Distribution-over-TLS LAN allowlist silently bypassed due to sockname/peername confusion in inet_tls_dist | 6.5 | 0.0021 |  |
| [CVE-2026-47078](https://patchblox.com/security/data/cve/CVE-2026-47078.md) | Routine | erlang-megaco: Relative Path Traversal vulnerability in Erlang OTP (stdlib zip module) allows writing files outside the intended ext... | n/a | 0.0015 |  |
| [CVE-2026-49760](https://patchblox.com/security/data/cve/CVE-2026-49760.md) | Routine | Stack Buffer Overflow in ei_s_print_term at Very Large Integer | 5.5 | 0.0014 |  |
| [CVE-2026-54891](https://patchblox.com/security/data/cve/CVE-2026-54891.md) | Routine | erlang: Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP... | 3.7 | 0.0014 |  |

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Data as of 2026-11-13T20:04:13Z 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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