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CVE-2026-100693— Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass

Quick assessment

Affected

gohugoio hugo

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hugo 在 v0.162.0 到 v0.166.0（不含）版本之间，存在一个与安全策略中的 IP 字面量（IP-literal）拒绝规则相关的区分大小写的验证缺陷。攻击者可以利用此缺陷绕过相关限制，通过在调用中使用大小写混合的 URL 方案，从受限制的本机地址（如 localhost）获取资源。

CVSS 8.4 · High EPSS 0.13% · P2 Updated Sep 28, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass

Source: CVE Program / CVE List V5

Vulnerability Description

Hugo versions from v0.162.0 before v0.166.0 contain a case-sensitive validation flaw in the security.http.urls IP-literal deny rule that allows attackers to bypass restrictions. Attackers can use mixed-case URL schemes in resources.GetRemote calls to fetch from restricted IP addresses like localhost.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

大小写敏感处理不恰当

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
gohugoio	hugo	0.162.0 ~ 0.166.0	-

II. Public POCs for CVE-2026-100693

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-100693

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Vendor Advisories for CVE-2026-100693 (1)

🔗 Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass | Advisories | VulnCheck third-party-advisory

Other References for CVE-2026-100693 (1)

https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-100693

Same Patch Batch · gohugoio · 2026-09-26 · 5 CVEs total

CVE-2026-100690	7.5 HIGH	Hugo v0.161.0 to v0.165.0 Arbitrary File Read via Symlinks
CVE-2026-100692	7.5 HIGH	Hugo before v0.166.0 Path Traversal via Symlinked Mount Roots
CVE-2026-100694	6.1 MEDIUM	Hugo before 0.166.0 Cross-Site Scripting via text/org
CVE-2026-100691	5.4 MEDIUM	Hugo before 0.166.0 Stored XSS via lineAnchors code block option

IV. Related Vulnerabilities

Same product: hugo

Same vendor: gohugoio

Same weakness: CWE-178

V. Comments for CVE-2026-100693

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-100693— Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass

Quick assessment

Possible ATT&CK Techniques 1 AI

I. Basic Information for CVE-2026-100693

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-100693

III. Intelligence Information for CVE-2026-100693

Vendor Advisories for CVE-2026-100693 (1)

Other References for CVE-2026-100693 (1)

Same Patch Batch · gohugoio · 2026-09-26 · 5 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-100693

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