{"id":"CVE-2026-114608","state":"PUBLISHED","title":"Pylint: Arbitrary code execution via pickle deserialization of the stats cache in PYLINT_HOME","description":"Pylint is a static code analyser for Python. From 0.15.2 until 4.0.9, Pylint stores module statistics in predictable files under PYLINT_HOME and loads those files with pickle.load on a later run. An attacker who can write to a shared, group-writable, or otherwise untrusted cache directory can replace a stats cache with crafted serialized data, causing arbitrary code to execute with the privileges of the user who next runs Pylint. The default per-user cache is not normally writable by another user. This issue is fixed in version 4.0.9.","publishedAt":"2026-10-22T16:50:02.569Z","updatedAt":"2026-10-29T11:49:18.315Z","severity":{"score":5.4,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["pylint-dev pylint"],"affected":[{"vendor":"pylint-dev","product":"pylint","versions":[{"version":"< 4.0.9","status":"affected"}]}],"references":["https://github.com/pylint-dev/pylint/security/advisories/GHSA-22qq-2fwx-7p67","https://github.com/pylint-dev/pylint/commit/58c87cffca9de2b3e89aa07b89686cbc90cfea2d","https://github.com/pylint-dev/pylint/commit/5b241f66318220e9ba7b21ca631fbfe8e77682ca","https://github.com/pylint-dev/pylint/releases/tag/v4.0.9"],"weaknesses":["CWE-502"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/114xxx/CVE-2026-114608.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-114608","state":"PUBLISHED","datePublished":"2026-10-22T16:50:02.569Z","dateUpdated":"2026-10-29T11:49:18.315Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-21T20:34:25.599Z"},"containers":{"cna":{"title":"Pylint: Arbitrary code execution via pickle deserialization of the stats cache in PYLINT_HOME","descriptions":[{"lang":"en","value":"Pylint is a static code analyser for Python. From 0.15.2 until 4.0.9, Pylint stores module statistics in predictable files under PYLINT_HOME and loads those files with pickle.load on a later run. An attacker who can write to a shared, group-writable, or otherwise untrusted cache directory can replace a stats cache with crafted serialized data, causing arbitrary code to execute with the privileges of the user who next runs Pylint. The default per-user cache is not normally writable by another user. This issue is fixed in version 4.0.9."}],"affected":[{"vendor":"pylint-dev","product":"pylint","versions":[{"version":"< 4.0.9","status":"affected"}]}],"references":[{"url":"https://github.com/pylint-dev/pylint/security/advisories/GHSA-22qq-2fwx-7p67","name":"https://github.com/pylint-dev/pylint/security/advisories/GHSA-22qq-2fwx-7p67","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pylint-dev/pylint/commit/58c87cffca9de2b3e89aa07b89686cbc90cfea2d","name":"https://github.com/pylint-dev/pylint/commit/58c87cffca9de2b3e89aa07b89686cbc90cfea2d","tags":["x_refsource_MISC"]},{"url":"https://github.com/pylint-dev/pylint/commit/5b241f66318220e9ba7b21ca631fbfe8e77682ca","name":"https://github.com/pylint-dev/pylint/commit/5b241f66318220e9ba7b21ca631fbfe8e77682ca","tags":["x_refsource_MISC"]},{"url":"https://github.com/pylint-dev/pylint/releases/tag/v4.0.9","name":"https://github.com/pylint-dev/pylint/releases/tag/v4.0.9","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","lang":"en","description":"CWE-502: Deserialization of Untrusted Data","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-22T16:50:02.569Z"},"source":{"advisory":"GHSA-22qq-2fwx-7p67","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-29T11:48:00.254037Z","id":"CVE-2026-114608","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-29T11:49:18.315Z"}}]}}}