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GitHub: security advisories, deprecations and releases
GitHub, the code hosting and collaboration platform.
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- This week
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What your digest would have held this week
5 items from the last 7 days. Zero sends only the ones that touch your stack.
- HIGH pull_request_target blocked by default December 2
- INFO Security risk assessments include repository protection status
- INFO Distributed tracing for CI pipelines without touching a single workflow file
- INFO Webhook IP ranges added to the Meta API
- INFO GitHub Enterprise now includes GitHub Copilot access
Security 7
- HIGH NEW THIS WEEK ACT BY 2 DEC 2026 GitHub Changelog · 2 Nov 2026
pull_request_target blocked by default December 2
GitHub Actions will block pull_request_target by default in public repos from Dec 2 2026 to reduce secret theft risk from forks. Two brownout windows precede enforcement.
- HIGH Wiz Blog · 26 Oct 2026
The Pwn Request Reckoning: What Still Works Against GitHub Actions
GitHub's 2026 Actions changes reduce pull_request_target attack risks, but residual attack surface remains and needs auditing.
- HIGH Wiz Blog · 25 Oct 2026
Gheist: Attempted Scaled Abuse of Stolen GitHub Tokens Stumbles
Automated campaign plants secret-dumping workflows in every reachable repo using stolen GitHub tokens. No C2 server, actively evolving, disrupted by recent GitHub security improvements.
- MEDIUM Cloudanix Threat Intelligence · 23 Oct 2026
Operation FlashHole
Operation FlashHole is a sophisticated cyber-espionage campaign attributed to the Lazarus Group, targeting software, construction, and manufacturing sectors in South Korea. The campaign, first seen in July 2025, uses spear-phishing and watering-hole attacks to exploit vulnerabilities in legitimate South Korean security software, CrossWeb EX. The attack chain is complex and primarily fileless, using in-memory execution and DLL side-loading to deploy…
- MEDIUM Cloudanix Threat Intelligence · 18 Oct 2026
GhostAction
The GhostAction campaign is a large-scale credential theft operation targeting GitHub. Attackers compromise user accounts to gain access to public repositories and their associated Continuous Integration (CI) environments. The primary goal is to extract secrets and credentials embedded within these CI configurations. A significant surge in this activity was noted in early October 2026, affecting over 1,900 user accounts and…
- MEDIUM Cloudanix Threat Intelligence · 11 Oct 2026
FakeGit
The FakeGit campaign has reactivated, utilizing more than 17,000 fake repositories on GitHub to distribute the SmartLoader malware. This malware then serves as a dropper for the StealC infostealer, posing a risk to users who download and execute content from these malicious repositories.
- MEDIUM GitHub Changelog · 2 Oct 2026
Rate limits for private vulnerability reports
GitHub now enforces daily per-user rate limits on private vulnerability reports to curb bulk and automated submissions while allowing legitimate reports.
Deprecations 3
- HIGH ACT BY 16 NOV 2026 GitHub Changelog · 24 Oct 2026
Legacy GitHub app for Teams retired Nov 16
Legacy GitHub notifications app will be renamed 'GitHub (deprecated)' and retired on November 16; users must install the new consolidated app to keep Copilot in Teams.
- INFO ACT BY 15 OCT 2026 GitHub Changelog · 15 Oct 2026
Email notifications for repository push events have been retired
GitHub retired automatic email notifications for repository push events on October 15, 2026 to prevent spam and abuse.
- HIGH ACT BY 2 NOV 2026 GitHub Changelog · 2 Oct 2026
GitHub Actions: macOS 14 runner image retirement
macOS 14 runner images will be permanently retired on November 2, 2026. Scheduled brownouts will cause jobs using these images to fail during October 2026.
Releases 15
- INFO NEW THIS WEEK GitHub Changelog · 2 Nov 2026
Security risk assessments include repository protection status
GitHub code security and secret risk assessments now display findings by protected or unprotected repository status.
- INFO NEW THIS WEEK ACT BY 28 OCT 2026 GitHub Changelog · 28 Oct 2026
GitHub Enterprise now includes GitHub Copilot access
GitHub Enterprise Cloud now bundles Copilot for licensed users, shifting cost control to AI usage metering against enterprise budgets.
- MEDIUM GitHub Changelog · 23 Oct 2026
Meta API endpoints updated for Actions blob storage
GitHub added new blob storage endpoints to the meta API for GitHub Actions. Organizations using network allowlists must update firewall rules to include new Azure blob storage hosts.
- INFO GitHub Changelog · 22 Oct 2026
Pull requests: Saved whitespace preferences and improved split view
GitHub now lets you save your whitespace visibility preference for all PRs and shows new and deleted files at full width in split view.
- INFO GitHub Changelog · 20 Oct 2026
Bulk migrate branch protections to rulesets for a repository
GitHub now allows converting all branch protection rules in a repository to rulesets in a single action.
- MEDIUM ACT BY 14 OCT 2026 GitHub Changelog · 14 Oct 2026
GitHub Actions workflow lockfiles now in public preview
GitHub Actions now supports workflow dependency lockfiles that pin actions and reusable workflows to specific commits, preventing tag or branch movement from introducing unexpected code.
- INFO GitHub Changelog · 13 Oct 2026
Search and filter for budgets now available
GitHub billing settings now show all budgets in one searchable and filterable list for personal, organization, or enterprise accounts.
- MEDIUM GitHub Changelog · 12 Oct 2026
Push attribution for commits in limited public preview
GitHub now records the authenticated user who pushes every commit and shows that identity in the UI and API next to author and committer fields.
- INFO GitHub Changelog · 9 Oct 2026
Triage role users or higher can now archive pull requests
GitHub now lets users with triage role or higher archive and unarchive pull requests, previously limited to admins. Archived PRs become read-only.
- INFO GitHub Changelog · 8 Oct 2026
Draft pull requests count toward pull request limits
Draft pull requests now count against a user's pull request limit, closing a loophole that let contributors bypass limits and flood repositories with drafts.
- INFO GitHub Changelog · 8 Oct 2026
Screen readers can navigate GitHub timelines as lists
GitHub now exposes issue and pull request timelines as structured lists so screen readers can announce item counts, positions, and loaded events.
- INFO GitHub Changelog · 6 Oct 2026
Stacked pull requests now generally available on GitHub
GitHub has released stacked pull requests to general availability, allowing developers to break large changes into smaller, independently reviewed pull requests that merge together.
- INFO GitHub Changelog · 3 Oct 2026
Repository security advisory comments API in public preview
New REST API endpoints allow reading, adding, and editing comments on repository security advisories, including those from private vulnerability reports.
- INFO GitHub Changelog · 3 Oct 2026
Actions retention now covers checks, runs, and statuses
Checks, workflow runs, and statuses are now governed by the existing GitHub Actions retention setting that also controls artifacts and logs.
- MEDIUM GitHub Changelog · 2 Oct 2026
Structured forms for private vulnerability reports
GitHub adds structured forms for private vulnerability reports, requiring fields like summary, details, proof-of-concept, and impact to improve report quality.
News and tools 5
- INFO NEW THIS WEEK ACT BY 21 OCT 2026 CNCF Blog · 31 Oct 2026
Distributed tracing for CI pipelines without touching a single workflow file
GitHub Actions observability can be gained org-wide by listening to workflow_run and workflow_job events via an OpenTelemetry Collector githubreceiver instead of modifying every workflow file.
- INFO NEW THIS WEEK GitHub Changelog · 29 Oct 2026
Webhook IP ranges added to the Meta API
GitHub added three new CIDR prefixes for webhook deliveries on github.com to the Meta API hooks field.
- MEDIUM GitHub Changelog · 19 Oct 2026
Some Git over HTTPS may temporarily require authentication
GitHub may ask for authentication on some unauthenticated public HTTPS clones and fetches during high traffic to protect availability.
- HIGH tl;dr sec · 3 Oct 2026
How to Investigate GitHub PAT Compromise
Wiz outlines six-step incident response for PAT leaks and notes GitHub log retention gaps that can erase reconnaissance evidence after seven days.
- HIGH tl;dr sec · 3 Oct 2026
Threat Hunter's Guide to GitHub Audit Logs
Datadog maps GitHub audit events to MITRE ATT&CK and highlights logging quirks that break attribution during source-code exfil investigations.
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