CVE-2026-100669

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Source
https://cve.org/CVERecord?id=CVE-2026-100669
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100669.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-100669
Aliases
  • GHSA-pg8v-xw58-frq8
Published
2026-09-26T13:23:34Z
Modified
2026-09-28T03:48:32Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Grav before 2.0.25 Sensitive File Disclosure via Case-Variation Bypass
Details

Grav before 2.0.25 ships web server configuration samples whose access-control deny rules are matched case-sensitively. In webserver-configs/web.config (IIS), every deny rule (user_sensitive_folders, user_accounts, user_data, user_error_redirect, user_pages, system, vendor, ignore_folders) sets ignoreCase="false" on its URL Rewrite element, overriding the IIS default of ignoreCase="true"; because these are rewrite matches rather than elements, there is no case-insensitive fallback. On IIS running over case-insensitive NTFS, an unauthenticated remote attacker can vary the case of a folder name or file extension (for example GET /user/CONFIG/system.YAML) so that no deny rule matches and the IIS static file handler resolves and returns the underlying file, disclosing sensitive data such as configuration secrets or account password hashes. Whether a bypassed file is actually returned depends on MIME registration: .json is served by default, while .yaml/.yml return HTTP 404.3 on a stock IIS unless a YAML MIME mapping has been added. The same class of gap exists in the bundled webserver-configs/lighttpd.conf, whose user/(config|env), directory, script-extension, root-file and dotfile rules lack the (?i) modifier, though it is lower risk because lighttpd typically runs on case-sensitive filesystems. Deployments served by Apache (.htaccess), nginx, Caddy, or the PHP built-in server are not affected. The issue is fixed in 2.0.25; because the .htaccess installer heal does not touch web.config or lighttpd.conf, operators must re-copy the corrected sample files after upgrading.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-178"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100669.json"
}
References

Affected packages

Git / github.com/getgrav/grav

Affected ranges

Type
GIT
Repo
https://github.com/getgrav/grav
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f633bb56c2ddd0c8ac4284441f13337c46f238d0
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "2.0.25"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

0.*
0.8.0
0.9.0
0.9.10
0.9.11
0.9.12
0.9.13
0.9.14
0.9.15
0.9.16
0.9.17
0.9.18
0.9.19
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8
0.9.9
1.*
1.1.0-beta.1
1.1.0-beta.2
1.1.0-beta.3
1.1.0-beta.4
1.1.0-beta.5
1.1.0-rc.1
1.1.0-rc.2
1.1.0-rc.3
1.1.9-rc.1
1.1.9-rc.2
1.1.9-rc.3
1.2.0-rc.1
1.2.0-rc.2
1.2.0-rc.3
1.3.0-rc.1
1.3.0-rc.3
1.3.0-rc.4
1.3.0-rc.5
1.5.0-beta.1
1.5.0-beta.2
1.5.0-rc.1
1.6.0-beta.1
1.6.0-beta.2
1.6.0-beta.5
1.6.0-beta.6
1.6.0-beta.7
1.6.0-beta.8
1.6.0-rc.1
1.6.0-rc.2
1.6.0-rc.3
1.6.0-rc.4
1.7.0
1.7.0-beta.1
1.7.0-beta.10
1.7.0-beta.2
1.7.0-beta.3
1.7.0-beta.4
1.7.0-beta.5
1.7.0-beta.6
1.7.0-beta.7
1.7.0-beta.8
1.7.0-beta.9
1.7.0-rc.1
1.7.0-rc.10
1.7.0-rc.12
1.7.0-rc.13
1.7.0-rc.14
1.7.0-rc.15
1.7.0-rc.17
1.7.0-rc.18
1.7.0-rc.19
1.7.0-rc.2
1.7.0-rc.20
1.7.0-rc.3
1.7.0-rc.4
1.7.0-rc.5
1.7.0-rc.6
1.7.0-rc.7
1.7.0-rc.8
1.7.0-rc.9
1.7.1
1.7.10
1.7.12
1.7.13
1.7.14
1.7.15
1.7.16
1.7.17
1.7.18
1.7.19
1.7.20
1.7.21
1.7.22
1.7.23
1.7.24
1.7.25
1.7.26
1.7.26.1
1.7.27
1.7.27.1
1.7.28
1.7.29
1.7.29.1
1.7.3
1.7.30
1.7.31
1.7.32
1.7.33
1.7.34
1.7.35
1.7.36
1.7.37
1.7.37.1
1.7.38
1.7.39
1.7.39.1
1.7.4
1.7.5
1.7.51
1.7.52
1.7.53
1.7.6
1.7.7
1.7.8
1.7.9
2.*
2.0.1
2.0.10
2.0.11
2.0.12
2.0.13
2.0.14
2.0.15
2.0.16
2.0.17
2.0.18
2.0.19
2.0.2
2.0.20
2.0.21
2.0.22
2.0.23
2.0.24
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100669.json"