Stored XSS Vulnerability in Grav Data Manager Plugin by Grav
CVE-2026-100673

8.4HIGH

Key Information:

Vendor

Getgrav

Status
Grav
Vendor
CVE Published:
26 September 2026

What is CVE-2026-100673?

The Grav Data Manager plugin has a vulnerability that allows stored Cross-Site Scripting (XSS) attacks. Versions 1.0.1 through 1.4.4 output stored data entries in the admin panel without proper escaping. An attacker can exploit this by injecting a malicious HTML payload via a front-end form, which will execute JavaScript within the session of an administrator accessing that entry later, compromising the administrator's privileges. This issue does not affect Grav 2.0 Admin Next interface, which correctly escapes the output.

Affected Version(s)

grav 0 < 1.4.5

grav 1.4.5

References

https://github.com/getgrav/grav/security/advisories/GHSA-...
vendor-advisory
https://www.vulncheck.com/advisories/grav-data-manager-be...
third-party-advisory

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

AlpetGexha
.