CVE-2026-72696

Grav CMS before 2.0.16 contains a symlink following vulnerability in Scheduler Job::createLockFile() that allows local attackers to overwrite arbitrary files by pre-creating symlinks at predictable lock file paths in the world-writable temp directory. Attackers can place a symlink at the predictable lock path pointing to any file the web server process can write to, and the next scheduled job run will follow the symlink and overwrite the target file's content with the job ID string.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/getgrav/grav/security/advisories/GHSA-q8w8-6cq5-j4h2
https://www.vulncheck.com/advisories/grav-cms-before-symlink-following-via-createlockfile
https://github.com/getgrav/grav/security/advisories/GHSA-q8w8-6cq5-j4h2

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 02:16

Updated : 2026-08-31 20:52

NVD link : CVE-2026-72696

Mitre link : CVE-2026-72696

CVE.ORG link : CVE-2026-72696

JSON object : View

Products Affected

No product.

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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