CVE-2026-100669 Grav - Information Disclosure

Grav before 2.0.25 contains an information disclosure vulnerability caused by case-sensitive access-control deny rules in IIS web.config and lighttpd.conf, letting unauthenticated remote attackers bypass restrictions to access sensitive files, exploit requires IIS with case-insensitive NTFS and specific file requests.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.44% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure, File System Read
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
26 September 2026
Updated
15 October 2026
Weakness
CWE-178

Vendor fix

Upgrade to version 2.0.25 and re-copy corrected web.config and lighttpd.conf sample files.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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