{"id":"CVE-2026-39401","state":"PUBLISHED","title":"Privilege Escalation via update_event Job Output in Cronicle","description":"Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.111, jb child processes can include an update_event key in their JSON output. The server applies this directly to the parent event's stored configuration without any authorization check. A low-privilege user who can create and run events can modify any event property, including webhook URLs and notification emails. This vulnerability is fixed in 0.9.111.","publishedAt":"2026-04-07T20:24:06.418Z","updatedAt":"2026-04-08T16:14:54.345Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["jhuckaby Cronicle"],"affected":[{"vendor":"jhuckaby","product":"Cronicle","versions":[{"version":"< 0.9.111","status":"affected"}]}],"references":["https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-5j3v-cq96-xw6v"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/39xxx/CVE-2026-39401.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-39401","state":"PUBLISHED","datePublished":"2026-04-07T20:24:06.418Z","dateUpdated":"2026-04-08T16:14:54.345Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-06T22:06:40.516Z"},"containers":{"cna":{"title":"Privilege Escalation via update_event Job Output in Cronicle","descriptions":[{"lang":"en","value":"Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.111, jb child processes can include an update_event key in their JSON output. The server applies this directly to the parent event's stored configuration without any authorization check. A low-privilege user who can create and run events can modify any event property, including webhook URLs and notification emails. This vulnerability is fixed in 0.9.111."}],"affected":[{"vendor":"jhuckaby","product":"Cronicle","versions":[{"version":"< 0.9.111","status":"affected"}]}],"references":[{"url":"https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-5j3v-cq96-xw6v","name":"https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-5j3v-cq96-xw6v","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-07T20:24:06.418Z"},"source":{"advisory":"GHSA-5j3v-cq96-xw6v","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-5j3v-cq96-xw6v","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-08T16:11:30.726704Z","id":"CVE-2026-39401","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-08T16:14:54.345Z"}}]}}}