EUVD-2026-60593
GHSA-2jqg-x237-hwx2
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable via API, low complexity, requires api.pages.write (PR:L); scope changes as Twig evaluates in server process; no availability impact per vendor vector.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
grav-plugin-api versions before 1.0.15 fail to validate Twig content in the translate() endpoint, allowing attackers with api.pages.write permission to persist pages with process.twig enabled. Attackers can submit crafted header and content parameters to execute server-side template injection payloads that are evaluated at render time.
AnalysisAI
Server-side template injection in grav-plugin-api before 1.0.15 enables remote code execution for any attacker holding api.pages.write permission. The translate() endpoint accepts unsanitized Twig template syntax in header and content parameters, which can be persisted to a page with process.twig enabled and evaluated by the Twig engine at render time. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold a valid credential or API token with the api.pages.write permission in the grav-plugin-api. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.6 (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N) reflects a realistic threat model: network-accessible, no attack complexity or timing requirements, but gated behind PR:L because the api.pages.write permission is required. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a valid API token scoped to api.pages.write submits a POST request to the translate() endpoint with a Twig payload such as {{['id']|map('system')|join}} embedded in the content or header parameters, persisting a page with process.twig: true. When any user or automated process subsequently requests the rendered page, the Twig engine evaluates the directive server-side, returning command output or facilitating further exploitation such as web shell deployment. … |
| Remediation | Upgrade grav-plugin-api to version 1.0.15 or later, which is the vendor-confirmed fix version per the GitHub Security Advisory GHSA-w94c-jmg4-w4c9. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all Grav servers running grav-plugin-api versions before 1.0.15 and identify all accounts with api.pages.write permission; immediately revoke or segregate this permission to trusted internal-only accounts and block API endpoint access from external networks if possible. …
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External POC / Exploit Code
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