{"id":"CVE-2023-39318","state":"PUBLISHED","title":"Improper handling of HTML-like comments in script contexts in html/template","description":"The html/template package does not properly handle HTML-like \"\" comment tokens, nor hashbang \"#!\" comment tokens, in <script> contexts. This may cause the template parser to improperly interpret the contents of <script> contexts, causing actions to be improperly escaped. This may be leveraged to perform an XSS attack.","publishedAt":"2023-09-08T16:13:24.063Z","updatedAt":"2025-02-13T17:02:46.777Z","severity":null,"assigner":"Go","products":["Go standard library html/template"],"affected":[{"vendor":"Go standard library","product":"html/template","packageName":"html/template","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.20.8","versionType":"semver"},{"version":"1.21.0-0","status":"affected","lessThan":"1.21.1","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"isComment"},{"name":"escaper.escapeText"},{"name":"tJS"},{"name":"tLineCmt"},{"name":"Template.Execute"},{"name":"Template.ExecuteTemplate"}]}],"references":["https://go.dev/issue/62196","https://go.dev/cl/526156","https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ","https://pkg.go.dev/vuln/GO-2023-2041","https://security.netapp.com/advisory/ntap-20231020-0009/","https://security.gentoo.org/glsa/202311-09"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:08.715Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/39xxx/CVE-2023-39318.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-39318","state":"PUBLISHED","datePublished":"2023-09-08T16:13:24.063Z","dateUpdated":"2025-02-13T17:02:46.777Z","assignerShortName":"Go","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateReserved":"2023-07-27T17:05:55.186Z"},"containers":{"cna":{"title":"Improper handling of HTML-like comments in script contexts in html/template","descriptions":[{"lang":"en","value":"The html/template package does not properly handle HTML-like \"\" comment tokens, nor hashbang \"#!\" comment tokens, in <script> contexts. This may cause the template parser to improperly interpret the contents of <script> contexts, causing actions to be improperly escaped. This may be leveraged to perform an XSS attack."}],"affected":[{"vendor":"Go standard library","product":"html/template","packageName":"html/template","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.20.8","versionType":"semver"},{"version":"1.21.0-0","status":"affected","lessThan":"1.21.1","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"isComment"},{"name":"escaper.escapeText"},{"name":"tJS"},{"name":"tLineCmt"},{"name":"Template.Execute"},{"name":"Template.ExecuteTemplate"}]}],"references":[{"url":"https://go.dev/issue/62196"},{"url":"https://go.dev/cl/526156"},{"url":"https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ"},{"url":"https://pkg.go.dev/vuln/GO-2023-2041"},{"url":"https://security.netapp.com/advisory/ntap-20231020-0009/"},{"url":"https://security.gentoo.org/glsa/202311-09"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}],"providerMetadata":{"shortName":"Go","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateUpdated":"2023-11-25T11:10:02.660Z"},"credits":[{"lang":"en","value":"Takeshi Kaneko (GMO Cybersecurity by Ierae, Inc.)"}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://go.dev/issue/62196","tags":["x_transferred"]},{"url":"https://go.dev/cl/526156","tags":["x_transferred"]},{"url":"https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ","tags":["x_transferred"]},{"url":"https://pkg.go.dev/vuln/GO-2023-2041","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20231020-0009/","tags":["x_transferred"]},{"url":"https://security.gentoo.org/glsa/202311-09","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T18:02:06.918Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-26T16:02:51.219482Z","id":"CVE-2023-39318","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-26T16:05:10.408Z"}}]}}}