CVE•Published 2025-12-01•Modified 2026-09-26•1 article on news•6 live references•NVD data

CVE-2025-66296Getgrav · Grav

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 75% of all CVEs

Weaknesses (CWE)

CWE-266Incorrect Privilege Assignment

Description

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access. This vulnerability is fixed in 1.8.0-beta.27.

Timeline

Published 2025-12-01

Modified 2026-09-26

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2025-66296

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Getgrav Grav"

All exposed Getgrav Grav instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Grav"

HTTP body or banner mentions "Grav" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2025-66296