What is CVE-2026-78851?

CVE-2026-78851 is a medium-severity vulnerability in N/a, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-10-15.

How severe is CVE-2026-78851?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in N/a

CVE-2026-78851

Directory Traversal vulnerability in Grav CMS 2.0.3 through 2.0.6 allows a remote attacker to obtain sensitive information via the GravExtension.php and the mediaDirFunc method.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2026-10-15 · last modified 2026-10-15.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-22 — Path Traversal
CWE-200 — Information Disclosure

References

github.com/getgrav/grav
github.com/getgrav/grav/blob/2.0.6/system/src/Grav/Common/Twig/Extension/GravEx…
github.com/getgrav/grav/blob/2.0.6/system/config/security.yaml
github.com/SLO-CYBER-SEC/CVE-2026-78851

Frequently asked questions

What is CVE-2026-78851?: CVE-2026-78851 is a medium-severity vulnerability in N/a, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-10-15.
How severe is CVE-2026-78851?: Medium severity. CVSS v3 base score is 6.5 out of 10.