{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58403","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-30T18:19:58.379Z","datePublished":"2026-07-06T19:25:45.971Z","dateUpdated":"2026-07-06T20:51:27.624Z"},"containers":{"cna":{"title":"Hugo symlink confinement bypass in os.ReadFile","problemTypes":[{"descriptions":[{"cweId":"CWE-59","lang":"en","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/gohugoio/hugo/security/advisories/GHSA-c3wq-j5vh-68rc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-c3wq-j5vh-68rc"},{"name":"https://github.com/gohugoio/hugo/pull/15020","tags":["x_refsource_MISC"],"url":"https://github.com/gohugoio/hugo/pull/15020"},{"name":"https://github.com/gohugoio/hugo/commit/cf9c8f93ca2a2838ce378f9e36d052ac2f79e229","tags":["x_refsource_MISC"],"url":"https://github.com/gohugoio/hugo/commit/cf9c8f93ca2a2838ce378f9e36d052ac2f79e229"},{"name":"https://github.com/gohugoio/hugo/releases/tag/v0.163.1","tags":["x_refsource_MISC"],"url":"https://github.com/gohugoio/hugo/releases/tag/v0.163.1"}],"affected":[{"vendor":"gohugoio","product":"hugo","versions":[{"version":">= 0.123.0, < 0.163.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-06T19:25:45.971Z"},"descriptions":[{"lang":"en","value":"Hugo is a static site generator. From v0.123.0 through v0.163.0, Hugo's virtual filesystem is designed so that files under a mount cannot reach outside the mount tree, but a regression caused RootMappingFs.statRoot to call Stat, which follows symlinks, instead of Lstat, so a direct os.ReadFile \"somefile\" where somefile was a symlink pointing outside the mount would return the target's contents. This effectively let a symlink planted inside a theme or local mount read arbitrary files reachable to the user running hugo. This issue is fixed in v0.163.1."}],"source":{"advisory":"GHSA-c3wq-j5vh-68rc","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-06T20:51:16.911843Z","id":"CVE-2026-58403","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":"2026-07-06T20:51:27.624Z"}}]}}