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Vulnerability record · CVE-2026-72696 · published 25 August 2026

CVE-2026-72696: Link following vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.20% · top 91.6% CWE-59 · Link following Deferred
8.6CVSS 4.0 base score
0.20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
31 Aug 2026Last modified by NVD

Description

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:4.0/AV:L/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:

References

LinkTags
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

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Source: NIST National Vulnerability Database (record CVE-2026-72696), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.