The unserialize function in PHP 5.3.0 and earlier allows context-dependent attackers to cause a denial of service (resource consumption) via a deeply nested serialized variable, as demonstrated by a string beginning with a:1: followed by many {a:1: sequences.
                
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Affected Vendors & Products
References
        History
                    Wed, 28 May 2025 14:45:00 +0000
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 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: mitre
Published: 2009-12-24T17:00:00Z
Updated: 2024-09-17T02:36:19.215Z
Reserved: 2009-12-24T00:00:00Z
Link: CVE-2009-4418
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Deferred
Published: 2009-12-24T17:30:00.233
Modified: 2025-04-09T00:30:58.490
Link: CVE-2009-4418
 Redhat
                        Redhat
                     ReportizFlow
ReportizFlow