{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58402","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-30T18:19:58.378Z","datePublished":"2026-07-06T19:19:58.754Z","dateUpdated":"2026-07-06T20:54:38.775Z"},"containers":{"cna":{"title":"Hugo default code block renderer XSS via unescaped code-fence language","problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":5.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/gohugoio/hugo/security/advisories/GHSA-q76j-gcg9-vxc6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-q76j-gcg9-vxc6"},{"name":"https://github.com/gohugoio/hugo/pull/15051","tags":["x_refsource_MISC"],"url":"https://github.com/gohugoio/hugo/pull/15051"},{"name":"https://github.com/gohugoio/hugo/commit/ce1a7e0bce3713af40496ded3c2c0ceeed49231d","tags":["x_refsource_MISC"],"url":"https://github.com/gohugoio/hugo/commit/ce1a7e0bce3713af40496ded3c2c0ceeed49231d"},{"name":"https://github.com/gohugoio/hugo/releases/tag/v0.163.3","tags":["x_refsource_MISC"],"url":"https://github.com/gohugoio/hugo/releases/tag/v0.163.3"}],"affected":[{"vendor":"gohugoio","product":"hugo","versions":[{"version":">= 0.60.0, < 0.163.3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-06T19:19:58.754Z"},"descriptions":[{"lang":"en","value":"Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class=\"language-…\" data-lang=\"…\" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out of the attribute and injects a live script element. This issue is fixed in 0.163.3."}],"source":{"advisory":"GHSA-q76j-gcg9-vxc6","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-06T20:52:58.622823Z","id":"CVE-2026-58402","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-06T20:54:38.775Z"}}]}}