{"id":"CVE-2026-50135","state":"PUBLISHED","title":"Hugo: Symlink confinement bypass in resources.Get","description":"Hugo is a static site generator. From 0.123.0 to 0.161.1, a regression made  RootMappingFs.statRoot  use  Stat  (follows symlinks) instead of  Lstat , so a direct  resources.Get  of a symlink pointing outside its mount returned the target's contents — letting a symlink planted in a local mount (e.g. a vendored  themes/  theme) read arbitrary files accessible to the Hugo user. Go-module themes from GitHub (symlinks stripped) and directory walks were unaffected. Fixed in 0.162.0.","publishedAt":"2026-07-06T19:52:04.561Z","updatedAt":"2026-07-07T16:57:29.874Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["gohugoio hugo"],"affected":[{"vendor":"gohugoio","product":"hugo","versions":[{"version":">= 0.123.0, < 0.162.0","status":"affected"}]}],"references":["https://github.com/gohugoio/hugo/security/advisories/GHSA-fw87-fv5r-9fpw","https://github.com/gohugoio/hugo/commit/f8b5fa09a64950c32b803821ede411ebfe772b7a","https://github.com/gohugoio/hugo/releases/tag/v0.162.0"],"weaknesses":["CWE-59"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50135.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50135","state":"PUBLISHED","datePublished":"2026-07-06T19:52:04.561Z","dateUpdated":"2026-07-07T16:57:29.874Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-03T18:49:32.275Z"},"containers":{"cna":{"title":"Hugo: Symlink confinement bypass in resources.Get","descriptions":[{"lang":"en","value":"Hugo is a static site generator. From 0.123.0 to 0.161.1, a regression made  RootMappingFs.statRoot  use  Stat  (follows symlinks) instead of  Lstat , so a direct  resources.Get  of a symlink pointing outside its mount returned the target's contents — letting a symlink planted in a local mount (e.g. a vendored  themes/  theme) read arbitrary files accessible to the Hugo user. Go-module themes from GitHub (symlinks stripped) and directory walks were unaffected. Fixed in 0.162.0."}],"affected":[{"vendor":"gohugoio","product":"hugo","versions":[{"version":">= 0.123.0, < 0.162.0","status":"affected"}]}],"references":[{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-fw87-fv5r-9fpw","name":"https://github.com/gohugoio/hugo/security/advisories/GHSA-fw87-fv5r-9fpw","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/gohugoio/hugo/commit/f8b5fa09a64950c32b803821ede411ebfe772b7a","name":"https://github.com/gohugoio/hugo/commit/f8b5fa09a64950c32b803821ede411ebfe772b7a","tags":["x_refsource_MISC"]},{"url":"https://github.com/gohugoio/hugo/releases/tag/v0.162.0","name":"https://github.com/gohugoio/hugo/releases/tag/v0.162.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-59","lang":"en","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-06T19:52:04.561Z"},"source":{"advisory":"GHSA-fw87-fv5r-9fpw","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-07T16:52:31.351209Z","id":"CVE-2026-50135","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":"2026-07-07T16:57:29.874Z"}}]}}}