CVE-2026-58404

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...

CVE-2026-58404 Hugo security.http.urls deny rules bypassed by alternate IPv4 encodings

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...

CVE-2026-58404 Hugo security.http.urls deny rules bypassed by alternate IPv4 encodings

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...

CVE-2026-58404

Hugo: From v0.162.0 to v0.163.0, the default security.http.urls policy blocked loopback/internal/cloud-metadata IPv4 literals, but the deny rule only matched dotted-decimal notation. Consequently, alternate IPv4 encodings (integer, hex, octal) could resolve to blocked addresses when a template pa...

GHSA-PWFV-328H-75X9 vulnerabilities

Vulnerabilities for packages: rclone-fips, seaweedfs-operator, filebrowser, mailpit-fips, seaweedfs-operator-fips, mattermost, mailpit, hugo-extended, hugo-fips, seaweedfs-rocksdb-fips, seaweedfs, hugo, mattermost-fips, gitlab-workhorse-ce, listmonk, seaweedfs-rocksdb, seaweedfs-fips, rclone...

CVE-2026-46602 vulnerabilities

Vulnerabilities for packages: rclone-fips, seaweedfs-operator, filebrowser, mailpit-fips, seaweedfs-operator-fips, mattermost, mailpit, hugo-extended, hugo-fips, seaweedfs-rocksdb-fips, seaweedfs, hugo, mattermost-fips, gitlab-workhorse-ce, listmonk, seaweedfs-rocksdb, seaweedfs-fips, rclone...

GHSA-C3WQ-J5VH-68RC Hugo: Symlink confinement bypass in os.ReadFile

Affected versions: v0.123.0 through v0.163.0. Earlier versions are not affected. Fixed in: v0.163.1. Severity: Medium. Requires the attacker to be able to place or convince a site author to place a symlink inside a mounted directory — for example, inside a locally-vendored theme under themes/...

Symlink Attack

Overview Affected versions of this package are vulnerable to Symlink Attack via the os.ReadFile function during direct lookups via resources.Get. An attacker can access arbitrary files outside the intended directory by placing a symlink inside a mounted directory that points to files outside the...

GHSA-Q76J-GCG9-VXC6 Hugo: XSS via unescaped code-fence language in default code block renderer

Hugo's default code-block renderer wrote the Markdown code-fence language / info-string into the wrapper without HTML escaping. A fence info-string containing a quote and a payload breaks out of the attribute and injects a live script element. This is not an issue if you fully trust every file...

PT-2026-55980

Name of the Vulnerable Software and Affected Versions Hugo versions 0.123.0 through 0.163.0 Description A regression in the virtual filesystem allows a symlink placed within a theme or local mount to read arbitrary files accessible to the user running the application. This occurs because the...

PT-2026-55981

Name of the Vulnerable Software and Affected Versions Hugo versions 0.162.0 through 0.163.0 Description The default security.http.urls policy fails to properly block requests to loopback, internal, and cloud-metadata IPv4 literals because the deny rule only matches dotted-decimal notation...

PT-2026-55979

Name of the Vulnerable Software and Affected Versions Hugo versions 0.60.0 through 0.163.2 Description The default code-block renderer fails to perform HTML escaping when writing the Markdown code-fence language or info-string into the code element's class and data-lang attributes. An attacker ca...

GHSA-FW87-FV5R-9FPW Hugo: Symlink confinement bypass in resources.Get

Commit: f8b5fa09a6 — Fix prevention of direct symlink reads in resources.Get Affected versions: v0.123.0 through v0.161.1. Earlier versions are not affected. Fixed in: v0.162.0. Severity: Medium. Requires the attacker to be able to place or convince a site author to place a symlink inside a mount...

Hugo: Symlink confinement bypass in resources.Get

Commit: f8b5fa09a6 — Fix prevention of direct symlink reads in resources.Get Affected versions: v0.123.0 through v0.161.1. Earlier versions are not affected. Fixed in: v0.162.0. Severity: Medium. Requires the attacker to be able to place or convince a site author to place a symlink inside a mount...

Symlink Attack

Overview Affected versions of this package are vulnerable to Symlink Attack via the resources.Get function. An attacker can access arbitrary files outside the intended directory by placing a symlink inside a mounted directory that points to files outside the mount. This is only exploitable if the...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the resources.GetRemote process when HTTP redirects are not properly validated against the configured allow-list. An attacker can access restricted internal or otherwise forbidden hosts by leveraging...

GHSA-VXGM-5RMG-5W8G Hugo: security.http.urls allow-list bypass via HTTP redirects

Commit: 86fbb0f7a8 — security: Validate redirects against security.http.urls Affected versions: v0.91.0 when security.http.urls was introduced through v0.161.1. Fixed in: v0.162.0. Severity: Only relevant for sites that rely on security.http.urls as a trust boundary — e.g. CI builds that fetch...

Hugo: security.http.urls allow-list bypass via HTTP redirects

Commit: 86fbb0f7a8 — security: Validate redirects against security.http.urls Affected versions: v0.91.0 when security.http.urls was introduced through v0.161.1. Fixed in: v0.162.0. Severity: Only relevant for sites that rely on security.http.urls as a trust boundary — e.g. CI builds that fetch...

GHSA-C54G-XJWJ-8G82 Hugo: XSS via text/html content files

Commit: e41a06447d — Disallow HTML content by default Affected versions: all Hugo versions prior to v0.162.0. Fixed in: v0.162.0. Severity: Low to Medium, depending on threat model. Not an issue if you fully trust every file under /content and every content adapter you load. Description. Hugo...

Hugo: XSS via text/html content files

Commit: e41a06447d — Disallow HTML content by default Affected versions: all Hugo versions prior to v0.162.0. Fixed in: v0.162.0. Severity: Low to Medium, depending on threat model. Not an issue if you fully trust every file under /content and every content adapter you load. Description. Hugo...