CVE-2021-3129: Ignition before 2.5.2, as used in Laravel and other products, allows unauthenticated remote attackers to ex...

Security readout for executives and security teams

This is a critical remote code execution issue in Ignition, commonly tied to Laravel debug mode. An unauthenticated attacker can potentially run arbitrary code on exposed vulnerable sites. Business urgency is high because CISA lists CVE-2021-3129 as known exploited, and public exploit references exist. Highest concern is internet-facing Laravel applications with debug mode enabled and vulnerable Ignition versions before 2.5.2 or Laravel before 8.4.2. Other products using Ignition may be relevant, but the provided affected-product metadata is incomplete. Treat as urgent for any public Laravel or Ignition-backed application. Known exploitation and unauthenticated code execution create direct risk of server compromise, data theft, and service disruption. Mitigation focus: Upgrade Ignition to 2.5.2 or later where used.; Upgrade Laravel deployments past the vulnerable versions identified in the CVE.; Disable debug mode on production and internet-facing systems..

Prepared

May 22, 2026, 05:34 UTC (UTC+00:00)

Reviewed

Jul 17, 2026, 06:24 UTC (UTC+00:00)

Michael Williams reviewed this cited source version on Jul 17, 2026, 06:24 UTC (UTC+00:00).