CVE-2026-56708 MEDIUM

CVE-2026-56708: Grav API Plugin before 1.0.16 SSRF via DNS Rebinding

Vendor Getgrav
Product grav
Weakness CWE-367
Published August 25, 2026
Last update August 25, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

What the vulnerability does

01Description

Grav API plugin before 1.0.16 contains a server-side request forgery vulnerability in webhook delivery that allows attackers to bypass hostname validation by DNS rebinding. Attackers controlling authoritative DNS for a configured webhook hostname can answer validation lookups with public addresses and delivery lookups with private addresses to reach internal network resources.

Key dates

02Disclosure timeline

August 25, 2026 CVE published