AIKIDO-2026-10889
symfony/runtime is vulnerable to Interpretation Conflict
73
High Risk
This Affects:
symfony/runtimeTL;DR
SymfonyRuntime decides whether to read argv using a parser state that can disagree with the web SAPI query string. A crafted web request can leave $_GET empty while still feeding attacker-controlled flags through $_SERVER['argv']. Pre-fix applications can have environment or debug settings changed by an unauthenticated request when register_argc_argv is enabled. The fix gates argv handling on QUERY_STRING instead of parsed query parameters.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range
Background info
symfony/runtime is vulnerable to Interpretation Conflict in versions 5.4.46 - 5.4.51, 6.4.14 - 6.4.39, 7.1.7 - 7.4.11 and 8.0.0 - 8.0.11.
How to fix this
Upgrade the symfony/runtime and/or symfony/symfony library to the patch version.
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