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CVE

CVE-2026-64850

Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()
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CVE

CVE-2026-64850

Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()

Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to calluserfunc_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\Common\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/getgrav/grav/releases/tag/2.0.7, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64850.json, https://github.com/getgrav/grav/security/advisories/GHSA-fj2p-qj2f-74v5, https://nvd.nist.gov/vuln/detail/CVE-2026-64850, https://github.com/getgrav/grav/commit/acffa34cbb0787fee87c609e0d6289e904fee33c

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00838%
EPSS Percentile
0.55131%
Introduced Version
0
Fix Available
6568f2d27ce9e1e578c4d0a690bd3e8e0a0689b2

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