CVE-2026-74907 getgrav CVE debrief

Who should care

Defenders responsible for Grav installations should assess exposure and prioritize remediation. This includes administrators, security teams, and IT personnel who manage Grav installations. They should verify the affected scope, ensure that all Grav installations are updated to the latest version, and monitor for potential exploitation attempts. Additionally, they should review system logs for suspicious activity and implement compensating controls for Ex.

Why it matters

CVE-2026-74907 is a high-severity path traversal vulnerability in Grav before 2.0.15, allowing unauthenticated attackers to access files in sibling directories. Defenders should prioritize verifying exposure and remediating vulnerable Grav installations to prevent unauthorized file access.

• Verify exposure of Grav installations to CVE-2026-74907
• Remediate vulnerable Grav installations to prevent unauthorized file access
• Monitor for potential exploitation attempts to detect possible attacks

Technical summary

The vulnerability exists in the static asset server within index.php, allowing unauthenticated attackers to access files in sibling directories by exploiting directory names that extend the base path string. This can be achieved by manipulating directory names to bypass directory-boundary validation, potentially leading to unauthorized file access. The vulnerability is classified as a path traversal vulnerability, which can have severe consequences if exploited. Defenders should prioritize verifying exposure and remediating vulnerable Grav installations to prevent unauthorized file access.

Defensive priority

Defenders should prioritize verifying exposure and remediating vulnerable Grav installations.

Recommended defensive actions

• Verify Grav installations for exposure to CVE-2026-74907
• Remediate vulnerable Grav installations to version 2.0.15 or later
• Monitor for potential exploitation attempts
• Review system logs for suspicious activity
• Implement compensating controls for exposed systems
• Track exceptions and retest remediated assets
• technicalSummary

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but vendor remediation and affected scope require verification. The vulnerability was reported to the vendor, who released a patch in version 2.0.15. However, defenders should verify the affected scope and ensure that all Grav installations are updated to the latest version to prevent exploitation. Additional verification steps include reviewing system logs for potential exploitation attempts and monitoring for suspicious activity.

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.