{"id":"CVE-2026-29052","state":"PUBLISHED","title":"HumHub Calendar Module: Stored XSS in Event Types","description":"The Calendar module for HumHub enables users to create one-time or recurring events, manage attendee invitations, and efficiently track all scheduled activities. Prior to version 1.8.11, a Stored Cross-Site Scripting (XSS) vulnerability in the Event Types of the HumHub Calendar module impacts users viewing events created by an administrative account. This issue has been patched in version 1.8.11.","publishedAt":"2026-03-05T05:48:10.557Z","updatedAt":"2026-03-05T15:30:11.121Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["humhub calendar"],"affected":[{"vendor":"humhub","product":"calendar","versions":[{"version":"< 1.8.11","status":"affected"}]}],"references":["https://github.com/humhub/calendar/security/advisories/GHSA-gqj3-pmp2-mrx8","https://github.com/humhub/calendar/releases/tag/v1.8.11"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/29xxx/CVE-2026-29052.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-29052","state":"PUBLISHED","datePublished":"2026-03-05T05:48:10.557Z","dateUpdated":"2026-03-05T15:30:11.121Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-03T17:50:11.244Z"},"containers":{"cna":{"title":"HumHub Calendar Module: Stored XSS in Event Types","descriptions":[{"lang":"en","value":"The Calendar module for HumHub enables users to create one-time or recurring events, manage attendee invitations, and efficiently track all scheduled activities. Prior to version 1.8.11, a Stored Cross-Site Scripting (XSS) vulnerability in the Event Types of the HumHub Calendar module impacts users viewing events created by an administrative account. This issue has been patched in version 1.8.11."}],"affected":[{"vendor":"humhub","product":"calendar","versions":[{"version":"< 1.8.11","status":"affected"}]}],"references":[{"url":"https://github.com/humhub/calendar/security/advisories/GHSA-gqj3-pmp2-mrx8","name":"https://github.com/humhub/calendar/security/advisories/GHSA-gqj3-pmp2-mrx8","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/humhub/calendar/releases/tag/v1.8.11","name":"https://github.com/humhub/calendar/releases/tag/v1.8.11","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-05T05:48:10.557Z"},"source":{"advisory":"GHSA-gqj3-pmp2-mrx8","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-05T15:29:52.961012Z","id":"CVE-2026-29052","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-05T15:30:11.121Z"}}]}}}