{"id":"CVE-2021-43942","published":"2022-01-04T02:40:09Z","modified":"2024-10-08T14:23:31Z","title":"Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or…","vendor":"Atlassian","product":"Jira Server","tier":"core","eol":null,"affectedVersions":[{"vendor":"Atlassian","product":"Jira Server","versions":[">= unspecified, < 8.13.15",">= 8.14.0, < unspecified",">= unspecified, < 8.20.3"]},{"vendor":"Atlassian","product":"Jira Data Center","versions":[">= unspecified, < 8.13.15",">= 8.14.0, < unspecified",">= unspecified, < 8.20.3"]}],"description":{"text":"Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a Reflected Cross-Site Scripting (XSS) vulnerability in the /rest/collectors/1.0/template/custom endpoint. To exploit this issue, the attacker must trick a user into visiting a malicious website. The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3.","provenance":"source","from":"CVE.org"},"summary":{"text":"The vulnerability is a reflected cross-site scripting flaw in the /rest/collectors/1.0/template/custom endpoint of Atlassian Jira Server and Data Center. An attacker who lures a user into visiting a malicious website can inject arbitrary HTML or JavaScript into the victim's session, and exploitation requires that user interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:23:52Z"},"cvss":null,"epss":{"score":0.55364,"percentile":0.99033,"date":"2026-10-31","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":null,"cwes":[],"references":[{"url":"https://jira.atlassian.com/browse/JRASERVER-73068","tags":["x_refsource_MISC"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2021-30804","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-30804","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2022-01-04","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2021-43942","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":19.8,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.81,"detail":"percentile 0.9903"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":0.0,"detail":"no CVSS"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}