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CVE-2026-34042

act is a project which allows for local running of github actions. Prior to version 0.2.86, act's built in actions/cache server listens to connections on all interfaces and allows anyone who can connect to it including someone anywhere on the internet to create caches with arbitrary keys and retrieve all existing caches. If they can predict which cache keys will be used by local actions, they can create malicious caches containing whatever files they please most likely allowing arbitrary remote
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:69cd50ed89cbb495a7e101d178c9dc5bd686f26da2039022f5e94643dcf60d93
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"act","vendor":"nektos","versions":[{"status":"affected","version":"< 0.2.86"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e7647144331a907fdbe6777e68c771d5fad33c14759cb2539e14cbd8403ac413 · sha256:fde2feefacd2456b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e7647144331a907fdbe6777e68c771d5fad33c14759cb2539e14cbd8403ac413 · sha256:fde2feefacd2456b… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e7647144331a907fdbe6777e68c771d5fad33c14759cb2539e14cbd8403ac413 · sha256:fde2feefacd2456b… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://code.forgejo.org/forgejo/runner/issues/294","tags":["x_refsource_MISC"],"url":"https://code.forgejo.org/forgejo/runner/issues/294"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e7647144331a907fdbe6777e68c771d5fad33c14759cb2539e14cbd8403ac413 · sha256:fde2feefacd2456b… · /containers/cna/references/2
{"name":"https://github.com/nektos/act/commit/c28c27e141e8b54f9853de82f421ee09846751f7","tags":["x_refsource_MISC"],"url":"https://github.com/nektos/act/commit/c28c27e141e8b54f9853de82f421ee09846751f7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e7647144331a907fdbe6777e68c771d5fad33c14759cb2539e14cbd8403ac413 · sha256:fde2feefacd2456b… · /containers/cna/references/1
{"name":"https://github.com/nektos/act/releases/tag/v0.2.86","tags":["x_refsource_MISC"],"url":"https://github.com/nektos/act/releases/tag/v0.2.86"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e7647144331a907fdbe6777e68c771d5fad33c14759cb2539e14cbd8403ac413 · sha256:fde2feefacd2456b… · /containers/cna/references/3
{"name":"https://github.com/nektos/act/security/advisories/GHSA-x34h-54cw-9825","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nektos/act/security/advisories/GHSA-x34h-54cw-9825"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e7647144331a907fdbe6777e68c771d5fad33c14759cb2539e14cbd8403ac413 · sha256:fde2feefacd2456b… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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