Detections
Analytics

openSUSE 16 Security Update : gh (openSUSE-SU-2026:21861-1)

high Nessus Plugin ID 347918

Synopsis

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

Description

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21861-1 advisory.

 Changes in gh:

 Update to version 2.100.0, fixing two deadlock issues in the vendored golang.org/x/crypto/ssh library reachable via crafted SSH channel messages (CVE-2026-56854, CVE-2026-56855, CVE-2026-78662, bsc#1278604):

 * Fix gh api telemetry disablement
 * Bump go-gh to v2.16.0
 * Expose per-host API host config
 * chore: bump toolchain to go1.26.8
 * chore: bump golang.org/x/crypto to 0.56.0
 * Record attachment invocation telemetry
 * Add webhook as an official extension
 * Merge pull request #14318 from cli/issue-triage-improvements
 * Refine GHES support wording
 * Use version-neutral GHES support link
 * Clarify supported GHES versions
 * Bump go-gh to v2.15.0
 * Remove redundant searcher comment
 * Remove unnecessary 204 on release edit
 * Remove redundant comment in gist create
 * Comment api command api_host usage
 * Comment missing api-client-rollout todo
 * Document when telemetry disabling is overzealous
 * Refactor AddAuthTokenHeader
 * Rename tokenGetter to config
 * build(deps): bump go-gh to rebased per-host api_host branch
 * refactor(attachments): send uploads through api.Client.DoRequest
 * test(internal/attachments): add new method required by interface
 * fix(api): compare request hostname without port when attaching auth token
 * test(acceptance): fix scriptfilter table field alignment
 * build(deps): bump go-gh to per-host api_host branch
 * chore(codeql): cover api.Client.Request in SafeURL path query
 * fix(auth/shared): route GetScopes path through safeurl
 * test(config): add coverage for APIHostForHost
 * test(config): cover deterministic api_host collision resolution
 * test(api): assert DoRequest preserves an explicit ContentLength
 * test(acceptance): cover selecting multiple scripts in one directory
 * refactor(api): use errors.AsType for HTTP error checks
 * fix(config): resolve api_host collisions deterministically
 * docs(api): clarify redirect method-rewriting in comments
 * Send release asset uploads and downloads through api.Client
 * Let callers set headers on a shared client request
 * Let a caller stop a request following redirects
 * Let a caller name the scopes an endpoint needs
 * Add a raw response request surface to api.Client
 * Send RenameRepo to a relative path
 * Make gh api honour api_host for relative paths
 * Send a host's token to its configured api_host
 * Add the api_host gateway harness
 * Let GH_ACCEPTANCE_SCRIPT name several scripts
 * Wait longer for the search index in the issues script
 * Add acceptance coverage for gist
 * Fix discussion acceptance test flags
 * Resolve aliases to their target when rendering full help on error
 * Print full help on command misuse for invoking agents

 Update to version 2.99.0:

 * Add repeatable --attach flag to upload local images/videos to issues, pull requests, and comments (max 50 files per call)
 * Add worktree checkout support to gh issue develop --checkout
 --worktree
 * Fix repo sync to avoid corrupting a linked worktree and to explain when the target branch is checked out elsewhere
 * Fix pr merge --delete-branch to safely handle linked worktrees
 * Reject --comments combined with --json on view commands

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 gh, gh-bash-completion, gh-fish-completion and / or gh-zsh-completion packages.

See Also

https://bugzilla.suse.com/1278604

https://www.suse.com/security/cve/CVE-2026-56854

https://www.suse.com/security/cve/CVE-2026-56855

https://www.suse.com/security/cve/CVE-2026-78662

Plugin Details

Severity: High

ID: 347918

File Name: openSUSE-2026-21861-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/18/2026

Updated: 9/18/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.6

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2026-56854

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS Score Source: CVE-2026-78662

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:gh-bash-completion, p-cpe:/a:novell:opensuse:gh-fish-completion, p-cpe:/a:novell:opensuse:gh-zsh-completion, p-cpe:/a:novell:opensuse:gh

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: 9/15/2026

Vulnerability Publication Date: 8/28/2026

Reference Information

CVE: CVE-2026-56854, CVE-2026-56855, CVE-2026-78662