{"id":"CVE-2021-39906","state":"PUBLISHED","title":"Improper validation of ipynb files in GitLab CE/EE version 13.5 and above allows an attacker to execute arbitrary JavaScript code on the victim's behalf.","description":"Improper validation of ipynb files in GitLab CE/EE version 13.5 and above allows an attacker to execute arbitrary JavaScript code on the victim's behalf.","publishedAt":"2021-11-04T23:04:36.000Z","updatedAt":"2024-08-04T02:20:33.690Z","severity":{"score":8.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","source":"GitLab"},"assigner":"GitLab","products":["GitLab GitLab"],"affected":[{"vendor":"GitLab","product":"GitLab","versions":[{"version":">=13.5, <14.2.6","status":"affected"},{"version":">=14.3, <14.3.4","status":"affected"},{"version":">=14.4, <14.4.1","status":"affected"}]}],"references":["https://gitlab.com/gitlab-org/gitlab/-/issues/341566","https://hackerone.com/reports/1347600","https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39906.json"],"weaknesses":[],"ingestedAt":"2026-10-29T19:48:52.666Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/39xxx/CVE-2021-39906.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-39906","state":"PUBLISHED","datePublished":"2021-11-04T23:04:36.000Z","dateUpdated":"2024-08-04T02:20:33.690Z","assignerShortName":"GitLab","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateReserved":"2021-08-23T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Improper validation of ipynb files in GitLab CE/EE version 13.5 and above allows an attacker to execute arbitrary JavaScript code on the victim's behalf."}],"affected":[{"vendor":"GitLab","product":"GitLab","versions":[{"version":">=13.5, <14.2.6","status":"affected"},{"version":">=14.3, <14.3.4","status":"affected"},{"version":">=14.4, <14.4.1","status":"affected"}]}],"references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/341566","tags":["x_refsource_MISC"]},{"url":"https://hackerone.com/reports/1347600","tags":["x_refsource_MISC"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39906.json","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"description":"Improper neutralization of input during web page generation ('cross-site scripting') in GitLab","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"GitLab","dateUpdated":"2021-11-04T23:04:36.000Z","orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a"},"credits":[{"lang":"en","value":"Thanks @saleemrashid for reporting this vulnerability through our HackerOne bug bounty program"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@gitlab.com","ID":"CVE-2021-39906","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"GitLab","version":{"version_data":[{"version_value":">=13.5, <14.2.6"},{"version_value":">=14.3, <14.3.4"},{"version_value":">=14.4, <14.4.1"}]}}]},"vendor_name":"GitLab"}]}},"credit":[{"lang":"eng","value":"Thanks @saleemrashid for reporting this vulnerability through our HackerOne bug bounty program"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Improper validation of ipynb files in GitLab CE/EE version 13.5 and above allows an attacker to execute arbitrary JavaScript code on the victim's behalf."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Improper neutralization of input during web page generation ('cross-site scripting') in GitLab"}]}]},"references":{"reference_data":[{"name":"https://gitlab.com/gitlab-org/gitlab/-/issues/341566","refsource":"MISC","url":"https://gitlab.com/gitlab-org/gitlab/-/issues/341566"},{"name":"https://hackerone.com/reports/1347600","refsource":"MISC","url":"https://hackerone.com/reports/1347600"},{"name":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39906.json","refsource":"CONFIRM","url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39906.json"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/341566","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://hackerone.com/reports/1347600","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39906.json","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T02:20:33.690Z"}}]}}}