CVE-2026-56701
MEDIUM Exploitation: PoC
6.5
CVSS 3.1
Description
Grav before 2.0.0-beta.2 contains an XML external entity injection vulnerability in SVG file upload processing that allows authenticated attackers to read arbitrary files. The application uses simplexml_load_string without disabling external entity loading, enabling attackers to inject XXE payloads via malicious SVG files to exfiltrate sensitive data.
Metadata
Severity & Metrics
6.5
MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC — CISA Coordinator
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Grav | Grav | — | 0 < 2.0.0-beta.2, 2.0.0-beta.2 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-611 | cna | Improper Restriction of XML External Entity Reference |
CVSS scores (2)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 7.1 | HIGH | 4.0 | cna | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| 6.5 | MEDIUM | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
References (2)
- GitHub Security Advisory (GHSA-3446-6mgw-f79p) https://github.com/getgrav/grav/security/advisories/GHSA-3446-6mgw-f79p
- VulnCheck Advisory: Grav - XML External Entity Injection via SVG Upload https://www.vulncheck.com/advisories/grav-xml-external-entity-injection-via-svg-upload