Description
Hugo from v0.60.0 before v0.167.0 contains a stored cross-site scripting vulnerability that allows Markdown content authors to inject HTML by supplying crafted explicit heading IDs. Attackers can break out of the unescaped href attribute in .TableOfContents or .Fragments.ToHTML output to inject elements with event handlers into rendered pages.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| gohugoio | hugo | 0.60.0 – < 0.167.0 | 0.167.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | hugo | 0.167.0-1 | — |
| Debian 13 | hugo | No fix yet | — |
| Debian 12 | hugo | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | hugo | No fix yet | — |
| Ubuntu 26.04 LTS | hugo | No fix yet | — |
| Ubuntu 22.04 LTS | hugo | No fix yet | — |
| Ubuntu 20.04 LTS | hugo | No fix yet | — |
| Ubuntu 18.04 LTS | hugo | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | hugo | No fix yet | — |
| Ubuntu Pro 24.04 LTS | hugo | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | hugo | 0.167.0-0.2.hum1 | RHSA-2026:80677 |
Advisories 1
- RHSA-2026:80677 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 20, 2026
References
- GitHub Security Advisory (GHSA-wcpj-vcvm-j4pg) vendor-advisory
- VulnCheck Advisory: Hugo v0.60.0 before v0.167.0 Stored XSS via Table of Contents Heading IDs third-party-advisory