CVE-2026-75829 getgrav CVE debrief

Who should care

Defenders and administrators of systems using grav-plugin-api, especially those granting api.pages.write permission to users or exposing the translate() endpoint, should assess their exposure and prioritize patching or mitigation.

Why it matters

CVE-2026-75829 is a high-severity vulnerability in grav-plugin-api that allows attackers to execute server-side template injection payloads. Defenders should prioritize patching, restrict permissions, and monitor activity to mitigate potential impacts.

• Potential for server-side template injection payload execution
• Possible persistence of malicious pages with process.twig enabled
• Required verification of affected versions and remediation status
• Need for monitoring translate() endpoint activity

Technical summary

The 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. This enables the execution of server-side template injection payloads at render time. The vulnerability has a CVSS score of 8.6 and was published on 2026-08-18. The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and affected versions. Defenders should prioritize patching or mitigating this vulnerability, especially in systems where api.pages.write permission is granted to users or where the translate() endpoint is exposed.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability, especially in systems where api.pages.write permission is granted to users or where the translate() endpoint is exposed.

Recommended defensive actions

• Patch or upgrade grav-plugin-api to version 1.0.15 or later
• Restrict api.pages.write permission to trusted users
• Monitor the translate() endpoint for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and affected versions. However, the corpus does not establish specific exploitation or impact instances. The vulnerability affects grav-plugin-api versions before 1.0.15. The CVE Program and NVD provide official records of the vulnerability. Additional sources, including [email protected], provide further details on the vulnerability and its potential impacts.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.