Fix: error 500 IIS#2
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When you have already set index.php as default, you get a error 500. So first you need to remove it then add it again. This is solving the error 500.
This was referenced Nov 25, 2015
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flaviocopes
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Jan 30, 2016
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rhukster
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Apr 24, 2026
Closes the rest of the Tier-1 unauth/authz advisories from the 2026-04 batch: - GHSA-gwfr-jfjf-92vv: Framework\Cache\Adapter\FileCache now HMAC-signs every payload (sha256, key from Security::getNonceKey()) and verifies on read. Tampered, forged, or pre-upgrade files are treated as cache misses and unlinked instead of being unserialized. New on-disk format v2\n<expires>\n<key>\n<hmac>\n<serialized>; existing caches rebuild transparently. (Adapter isn't currently in Grav's main cache path — Symfony's FilesystemAdapter is — but the class is reachable to plugin authors so the hardening is defensive.) - GHSA-vj3m-2g9h-vm4p (5-part advisory): * #1 Scheduler\JobQueue: serialized_job blob now carries a sibling serialized_job_hmac field; reconstructJob refuses to unserialize an item whose HMAC missing/mismatches and falls through to the safe structured-fields rebuild. Closes the Job::exec → call_user_func_array direct RCE gadget chain. * #2 FileCache: same fix as GHSA-gwfr above. * #3 Session::getFlashObject: payload is now wrapped in "v2|<hmac>|<serialized>"; legacy/forged envelopes return null instead of triggering unserialize. * #4 InstallCommand git clone: branch/url/path coming from user/.dependencies are now escapeshellarg'd, with a "--" separator before url/path to block option-injection (e.g. --upload-pack=evil in path). * #5 cleanDangerousTwig: twig_array_reduce (advisory call-out) plus twig_array_some/twig_array_every added to CALLABLE_DANGEROUS_NAMES. Two new test files (FileCacheSecurityTest, UnserializeIntegritySecurityTest) covering 13 cases between them; CleanDangerousTwigTest extended with the new twig_array_* entries. Full unit suite: 645 tests, 2447 assertions.
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When you have already set index.php as default, you get a error 500.
So first you need to remove it then add it again. This is solving the error 500.