CVE-2026-56708
6.9
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
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| getgrav | grav | 0 < 1.0.16 | affected |
| getgrav | grav | 1.0.16 | unaffected |
Weaknesses
- CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
- 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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