Vulnerability DatabaseCVE-2026-56708
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CVE-2026-56708
Published:August 25, 2026
Updated:September 24, 2026
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.
Affected Packages
https://github.com/getgrav/grav-plugin-api.git (GITHUB):
Affected version(s) >=1.0.0-beta.1 <1.0.16
Fix Suggestion:
Update to version 1.0.16
Related Resources (2)
https://github.com/getgrav/grav/security/advisories/GHSA-hq2v-cgw4-fw2w
https://www.vulncheck.com/advisories/grav-api-plugin-before-ssrf-via-dns-rebinding
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
LOW
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-367
EPSS
Base Score:
0.17