What’s Vulnerable › Vulnerabilities

CVE-2026-62673: Grav: .htaccess file extension rules bypass via case variation on case-insensitive filesystems

• Severity: high (CVSS 8.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-19 · updated 2026-09-09
• Weakness: CWE-178

Description

Grav is a file-based Web platform. Prior to 2.0.4, the Grav .htaccess and webserver-configs/htaccess.txt security rules omit the Apache [NC] flag and therefore compare sensitive directory and file-extension patterns case-sensitively. On a case-insensitive filesystem, an unauthenticated requester can use uppercase directory or extension variants to bypass the rules and retrieve files under user/accounts or user/config, including password hashes and security configuration. This issue is fixed in version 2.0.4.

Affected products

• getgrav grav: before 2.0.4

References

• https://github.com/getgrav/grav/commit/8c9d1e7b6fd66ecea80a4bc3783fd41d36e22fb1
• https://github.com/getgrav/grav/releases/tag/2.0.4
• https://github.com/getgrav/grav/security/advisories/GHSA-vwg3-w8w3-pc79
• https://github.com/getgrav/grav/security/advisories/GHSA-vwg3-w8w3-pc79

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