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OPENSUSE-SU-2026:21861-1

Vulnerability from csaf_opensuse - Published: 2026-09-15 16:45 - Updated: 2026-09-17 17:44
Summary
Security update for gh
Severity
Important
Notes
Title of the patch: Security update for gh
Description of the patch: This update for gh fixes the following issues: 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
Patchnames: openSUSE-Leap-16.0-packagehub-593
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-56854
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: openSUSE Leap 16.0:gh-0:2.100.0-bp160.1.1.aarch64 —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:gh-0:2.100.0-bp160.1.1.ppc64le —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:gh-0:2.100.0-bp160.1.1.s390x —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:gh-0:2.100.0-bp160.1.1.x86_64 —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:gh-bash-completion-0:2.100.0-bp160.1.1.noarch —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:gh-fish-completion-0:2.100.0-bp160.1.1.noarch —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:gh-zsh-completion-0:2.100.0-bp160.1.1.noarch —
Vendor Fix
Threats
Impact important
CVE-2026-56855
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 7 products, the same list as for CVE-2026-56854
Threats
Impact important
CVE-2026-78662
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Recommended 7 products, the same list as for CVE-2026-56854
Threats
Impact important
References
To clipboard 

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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.