{"answers":{"affected":"3 open source packages ship an affected version, including github.com/gohugoio/hugo. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-58404 in the wild and no public exploit code.","fix":"Upgrade github.com/gohugoio/hugo to 0.163.1 or later.","what":"CVE-2026-58404 is a medium-severity server-side request forgery vulnerability in gohugoio hugo, published on 6 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-58404 and fix it if it is affected.\n\nWhat it is: CVE-2026-58404 is a medium-severity server-side request forgery vulnerability in gohugoio hugo, published on 6 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-58404 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/gohugoio/hugo (Go): affected from 0.162.0; fixed in 0.163.1\n- github.com/gohugoio/hugo (Go): affected from 0.162.0; fixed in 0.163.1\n- github.com/gohugoio/hugo (Go): affected from 0.162.0; fixed in 0.163.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-58404/ (Markdown: https://insights.sbomify.com/CVE-2026-58404/index.md)","id":"CVE-2026-58404","markdown":"https://insights.sbomify.com/CVE-2026-58404/index.md","name":"CVE-2026-58404","record":{"aliases":["DEBIAN-CVE-2026-58404","GHSA-r46f-3rpw-hxrv","GO-2026-5606","UBUNTU-CVE-2026-58404"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Hugo static site generator","requires_auth":"low_privilege","summary":"Attackers can bypass URL deny rules using alternate IPv4 encodings to access internal services or cloud metadata during Hugo builds.","user_interaction":"required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"hugo","vendor":"gohugo"}],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"Hugo is a static site generator. From v0.162.0 through v0.163.0, the default security.http.urls policy denies requests to loopback, internal, and cloud-metadata IPv4 literals, but the deny rule only matched dotted-decimal notation, so alternate IPv4 encodings of the same addresses, including integer, hex, or octal, passed the policy. When a template passes an untrusted or data-derived URL to resources.GetRemote and the host platform uses the cgo system resolver, these encodings resolve to the blocked address, allowing build-time server-side requests to loopback and internal services, including the cloud-metadata endpoint in hosted or CI builds; the same check is reused on redirects, so the gap also applies to each redirect hop. This issue is fixed in v0.163.1.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Hugo security.http.urls deny rules bypassed by alternate IPv4 encodings","id":"CVE-2026-58404","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Please submit CVE requests for each vulnerability.","id":"CVE-2026-58407"},"packages":[{"ecosystem":"Go","fixed":["0.163.1"],"introduced":["0.162.0"],"last_affected":[],"package":"github.com/gohugoio/hugo","purl":null,"source":"GHSA-r46f-3rpw-hxrv"},{"ecosystem":"Go","fixed":["0.163.1"],"introduced":["0.162.0"],"last_affected":[],"package":"github.com/gohugoio/hugo","purl":"pkg:golang/github.com/gohugoio/hugo","source":"GHSA-r46f-3rpw-hxrv"},{"ecosystem":"Go","fixed":["0.163.1"],"introduced":["0.162.0"],"last_affected":[],"package":"github.com/gohugoio/hugo","purl":"pkg:golang/github.com/gohugoio/hugo","source":"GO-2026-5606"}],"prev":{"headline":"Hugo symlink confinement bypass in os.ReadFile","id":"CVE-2026-58403"},"products":["hugo"],"published":"2026-07-06","related":[{"cvss_score":9.3,"headline":"Hugo 0.162.0 to 0.164.x - Node Permission Model Bypass via Default TailwindCSS Child-Process Grant","id":"CVE-2026-75926","kev_date_added":null,"published":"2026-08-18"},{"cvss_score":8.7,"headline":"Hugo v0.161.0 to v0.165.0 Arbitrary File Read via Symlinks","id":"CVE-2026-100690","kev_date_added":null,"published":"2026-09-26"},{"cvss_score":8.7,"headline":"Hugo before v0.166.0 Path Traversal via Symlinked Mount Roots","id":"CVE-2026-100692","kev_date_added":null,"published":"2026-09-26"},{"cvss_score":8.6,"headline":"Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass","id":"CVE-2026-100693","kev_date_added":null,"published":"2026-09-26"},{"cvss_score":7.7,"headline":"Hugo can execute a binary from the current directory on Windows","id":"CVE-2020-26284","kev_date_added":null,"published":"2020-12-21"},{"cvss_score":6.9,"headline":"Hugo: Symlink confinement bypass in resources.Get","id":"CVE-2026-50135","kev_date_added":null,"published":"2026-07-06"},{"cvss_score":6.3,"headline":"Hugo: security.http.urls allow-list bypass via HTTP redirects","id":"CVE-2026-50134","kev_date_added":null,"published":"2026-07-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-07","vendors":["gohugoio"]},"summary":"Attackers can bypass URL deny rules using alternate IPv4 encodings to access internal services or cloud metadata during Hugo builds.","url":"https://insights.sbomify.com/CVE-2026-58404/"}