actions-cool/issues-helper has 0 versions on the GitHub Actions marketplace flagged in 1 incident we track. Other versions of this package are not implicated - only the exact versions listed below were named by the source advisories.
On 2026-05-19 an attacker with push access to the actions-cool GitHub org force-moved every tag in actions-cool/issues-helper (53 tags, including the floating v1 / v2) and actions-cool/maintain-one-comment (15 tags) to a single imposter commit. Any workflow pinned to a tag - not a full commit SHA - pulled the imposter dist/index.js, which dumps Runner.Worker memory to exfiltrate GitHub Actions secrets. Shares C2 (t.m-kosche.com) with the same-day @antv and durabletask waves; attributed to TeamPCP.
Versions named here:
What to do if you installed one of these
Treat the machine as compromised rather than simply upgrading. Packages in these incidents typically execute at install time, so the payload has already run with whatever credentials were in the environment.
1.Rotate every credential that machine or CI job could reach - registry tokens, cloud keys, SSH keys, CI secrets - from a different machine.
2.Pin to a version not listed above, then reinstall from a clean lockfile.
3.Clear caches and private mirrors. Artifactory, Nexus, Verdaccio, and devpi routinely keep serving a tarball after the public registry has pulled it.
4.Read the incident write-up above - recommended actions differ per incident, and some have specific indicators of compromise worth grepping your logs for.
Check your whole project
actions-cool/issues-helper is one of many packages in these incidents, and it is usually pulled in as a transitive dependency rather than one you installed directly. We don't parse GitHub Actions manifests yet, but the incident write-ups list every affected package.
Version data comes from the public advisories cited on each incident page. We list only versions those advisories name - we don't infer additional ones. Think this is wrong or incomplete? Tell us.
