bc1q3909urygy90qhytu32344ws0t5vy085y0h7xc8 0x71faaDcAF2538e7346885F772FBAcb88740059A8 49PeCUfdgmG1ZMAzUxz2WFWiRDbDrycrJ8qYVfxBq6HWCHjk7uncaoESm7CRF5DtxcFgStuvyvcfUD3p4xU33F8dPep53MP 9 analyses tagged github-actions, sorted newest first.
Mutable refs for simonecorsi/mawesome including latest, v1, v2, and v2.2.0 currently resolve to a composite action that installs Bun and always runs an obfuscated JavaScript payload, exposing GitHub Actions runners that still trust those tags.
An attacker force-pushed a malicious composite action into codfish/semantic-release-action and moved fifteen published tags to that commit, exposing GitHub Actions runners that still trusted mutable refs such as v3, v4, and v5.
Microsoft reported that the Claude Code GitHub Action could expose workflow secrets through a Read-tool path that reached /proc/self/environ; Anthropic shipped v2.1.128 as the fixed release.
All 53 reviewed tags for actions-cool/issues-helper and all 15 tags for actions-cool/maintain-one-comment were moved to dangling imposter commits that scraped GitHub Actions runner memory and exfiltrated credentials. GitHub now blocks access to both repositories.
Megalodon added malicious GitHub Actions workflows to thousands of public repositories to collect environment variables, cloud credentials, source-control secrets, and runner tokens.
On May 11, 2026, the popular open-source project TanStack fell victim to a CI/CD release pipeline poisoning attack. Threat actors hijacked the release pipeline via a pull request exploitation vector and OIDC token theft to publish 84 backdoored versions across 42 packages.
A malicious `elementary-data==0.23.3` release was pushed to PyPI and GHCR after attackers exploited a GitHub Actions script-injection path, adding an interpreter-startup `.pth` infostealer.
Bitwarden confirmed that @bitwarden/cli@2026.4.0 was maliciously distributed through the npm CLI delivery path for a short April 22, 2026 window. CVE-2026-42994 tracks the incident; artifact analysis tied the package to bw_setup.js, bw1.js, Bun bootstrap, credential theft, and GitHub fallback channels.
On March 19, 2026, the widely adopted container vulnerability scanner Trivy was compromised in a major supply chain attack. Cybercrime group TeamPCP poisoned version tags to harvest and exfiltrate runner credentials.