Hugo is a static site generator. In versions from v0.56.0 through v0.165.x, content files mapped to the text/org media type are rendered without escaping raw HTML: Org export blocks and @@html:...@@ snippets pass HTML through unescaped, resulting in cross-site scripting (XSS) in the generated site. An attacker who can supply or influence a content file under /content or the output of a content adapter can inject scripts that execute in the browsers of visitors to the affected pages. Only pages whose source file or content-adapter output declares the text/org media type are affected, and sites that fully trust all content sources are not impacted. Version v0.166.0 fixes the issue by introducing a security.allowContent allowlist that denies text/org by default; sites that intentionally author Org Mode content can opt back in with [security] allowContent = ['.*'].
CVE-2026-100694
Score 6.1 from GitHub Security Advisory published 2026-09-26. A secondary CVSS source baseline 6.1; sources differ by 0.0.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.1
- EG Score
- 6.1MEDIUMhigh confidence
- EG Risk
- 28EG Risk 28/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity61% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.2%
- EPSS %ILE
- 7th
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
September 26, 2026
Last Modified
September 30, 2026
Advisory Details (2)
Auto-updated Sep 26, 2026Hugo before 0.166.0 Cross-Site Scripting via text/org | Advisories | VulnCheck
https://www.vulncheck.com/advisories/hugo-before-0.166.0-cross-site-scripting-via-text-orgXSS via text/org content files · Advisory · gohugoio/hugo · GitHub
https://github.com/gohugoio/hugo/security/advisories/GHSA-pq74-mj4h-cjq2Vendor Advisories for CVE-2026-100694(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | hugo-main-0.166.0-0.1.hum1 | 2026-09-09 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 29× in last 7d / 32× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-03 17:15 UTCEG score recompute
- 2026-10-03 17:15 UTCVendor advisory
- 2026-10-03 17:15 UTCGHSA enrichment
- 2026-10-03 14:25 UTCEPSS rescore
- 2026-10-02 17:08 UTCEG score recompute
- 2026-10-02 17:08 UTCVendor advisory
- 2026-10-02 17:07 UTCGHSA enrichment
- 2026-10-01 19:49 UTCEPSS rescore
- 2026-10-01 17:01 UTCVendor advisory
- 2026-10-01 17:00 UTCGHSA enrichment
- 2026-09-30 16:27 UTCEG score recompute
- 2026-09-30 16:27 UTCVendor advisory
- 2026-09-30 16:27 UTCGHSA enrichment
- 2026-09-30 15:31 UTCEG score recompute
- 2026-09-30 15:31 UTCVendor advisory
- 2026-09-30 15:31 UTCGHSA enrichment
- 2026-09-30 15:02 UTCEPSS rescore
- 2026-09-29 19:22 UTCVendor advisory
- 2026-09-29 19:22 UTCGHSA enrichment
- 2026-09-29 17:05 UTCEG score recompute
- 2026-09-29 17:05 UTCVendor advisory
- 2026-09-29 17:05 UTCGHSA enrichment
- 2026-09-29 15:20 UTCEPSS rescore
- 2026-09-28 16:58 UTCGHSA enrichment
- 2026-09-28 14:45 UTCEG score recompute
Show 7 moreShow fewer
- 2026-09-28 14:45 UTCGHSA enrichment
- 2026-09-28 13:50 UTCEPSS rescore
- 2026-09-27 14:38 UTCEG score recompute
- 2026-09-27 14:38 UTCGHSA enrichment
- 2026-09-26 14:30 UTCEG score recompute
- 2026-09-26 13:35 UTCEG score recompute
- 2026-09-26 13:30 UTCMITRE cvelistV5first tracked
Related CVEs(same vendor + same CWE)
Same vendor
6 shownredhat:RHSA-2026:66266
Frequently asked(5)
What is CVE-2026-100694?
When was CVE-2026-100694 disclosed?
Is CVE-2026-100694 actively exploited?
What is the CVSS score of CVE-2026-100694?
How do I remediate CVE-2026-100694?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-100694
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