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openSUSE 16 Security Update : go-sendxmpp (openSUSE-SU-2026:21277-1)

medium Nessus Plugin ID 326414

Synopsis

The remote openSUSE host is missing one or more security updates.

Description

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21277-1 advisory.

 Changes in go-sendxmpp:

 - Update to 0.16.0:
 Added:
 * Add Ox support to http-upload.
 * Add Ox support for private group chats.
 * Show error cause if joining MUCs failedi (requires go-xmpp >= v0.3.5).
 Changed:
 * Fix --ox-delete-nodes.
 * Fix receiving of 1-1 messages while joined in a MUC.
 * Use go-sendxmpp + a random ID as fallback MUC alias.
 * Strip leading xmpp: from recipients.
 * Strip trailing ?join from MUC JIDs.
 * Add context for timeouts in stanza handling.
 * Check ID for disco items reply (requires go-xmpp >= v0.3.6).
 * Reduce channel buffer size to 1 where only one item will be returned.
 * Deprecate legacy PGP.
 * CVE-2026-1229: The CombinedMult function produces an incorrect value (bsc#1265538) Bump circl to 1.6.3
 * CVE-2026-39821: Failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266617) Bump net to 0.56.0

 - Update to 0.15.8:
 * Fix windows build (windows doesn't support syscalls Setgid and Setuid).

 - Update to 0.15.7:
 * Fix http-upload with legacy PGP encryption.
 * Fix reading of environment variables.
 * Fix a bug in looking up host meta 2.
 * Try to drop root privileges before connecting to the server.
 * Fix crash if a config key has no value.
 * Use a salt for stored FAST token.
 * Increase scrypt iterations for storing FAST token from 32768 to 65536.
 * Log a warning when --no-tls-verify or -n is set.

 - Update to 0.15.6:
 Added:
 * New config option allow_plain.
 Changed:
 * Explain each configuration option in manpage go-sendxmpp(5).
 * Improve config parsing robustness.
 * Update link in manpage as Gitlab calls issues now work items.
 * Recognize stanza size limit updates after authentication (via go-xmpp >= v0.3.3).
 * Tell connection target in error message when failing to connect.
 - Drop tar-scm service and use regular tarball and go_modules

 - Update to 0.15.5:
 * Fix SASL SCRAM Downgrade Protection in case of server providing different mechanisms for SASL and SASL2 (requires go-xmpp >0 v0.3.2).

 - Update to 0.15.4:
 * http-upload: Manually set content length for HTTP request (fixes issues with certain http modules/proxies).

 - Update to 0.15.3:
 * Fix PLAIN authentication for SASL2 (requires go-xmpp >= v0.3.1).

 - Update to 0.15.2:
 * Use UUIDv7 instead of UUIDv4 for stanza IDs (requires go-xmpp >= v0.2.19).
 * Fix stanza syntax error for legacy PGP messages.
 * Print error if legacy PGP and Ox are requested simultaneously.
 * Reworked OOB file sending and http-upload to use new functions from go-xmpp library (requires go-xmpp >= v0.3.0).
 * Try password login if FAST login fails.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected go-sendxmpp package.

See Also

https://bugzilla.suse.com/1265538

https://bugzilla.suse.com/1266617

https://www.suse.com/security/cve/CVE-2026-1229

https://www.suse.com/security/cve/CVE-2026-39821

Plugin Details

Severity: Medium

ID: 326414

File Name: openSUSE-2026-21277-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/12/2026

Updated: 7/12/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.98

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-1229

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:go-sendxmpp

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2026

Vulnerability Publication Date: 2/24/2026

Reference Information

CVE: CVE-2026-1229, CVE-2026-39821