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CVE-2024-58136 is a regression of CVE-2024-4990 in Yii 2 versions before 2.0.52. Yii improperly handles behavior configurations defined through an __class array key, allowing attacker-controlled configuration data to reach an alternate behavior-attachment/object-instantiation path without the intended restrictions. In affected applications, a malicious JSON payload can abuse this behavior to instantiate a usable gadget and execute PHP contained in a server-side session file. The vulnerability was exploited in conjunction with Craft CMS CVE-2025-32432 during attacks observed from February through April 2025.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
30 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An input validation flaw in the Yii framework used by Craft CMS that was chained with CVE-2025-32432 in attacks in the wild to breach servers.
A Yii framework input validation flaw that was reportedly chained with CVE-2025-32432 in real-world attacks to facilitate compromise and persistence.
A critical Craft CMS exploitation chain component: an alternate path protection flaw in the Yii PHP framework used in zero-day attacks against Craft CMS servers.
An improper protection of alternate path vulnerability in the Yii framework leading to arbitrary code execution, exploited in zero-day attacks against Craft CMS.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.