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CVE-2019-12814 is a polymorphic deserialization vulnerability in FasterXML jackson-databind versions 2.x through 2.9.9. When Default Typing is enabled globally or for a property on an externally exposed JSON endpoint, Jackson can deserialize attacker-controlled type information through JDOM 1.x or 2.x classes present on the application classpath. A crafted JSON message can thereby cause disclosure of arbitrary local files accessible to the server process.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (14 hidden).
This repository is a proof-of-concept (PoC) exploit for CVE-2019-12814, a vulnerability in the Jackson-databind Java library that allows remote code execution (RCE) and server-side request forgery (SSRF) via unsafe deserialization. The main exploit logic is implemented in 'src/main/java/com/jacksonTest/Poc.java', which demonstrates two payloads: one for SSRF (using a DNS logging domain) and one for RCE (using the H2 database to fetch and execute a remote SQL script via HTTP). The repository includes a Maven configuration (pom.xml) specifying the vulnerable Jackson-databind version (2.9.8) and required dependencies. The 'simpleTest.json' file provides a sample input for deserialization attacks. The exploit requires the target application to deserialize untrusted data with Jackson and have default typing enabled. No detection scripts or fake code are present; the code is a functional PoC for the specified CVE.
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23 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Jackson Databind polymorphic-typing vulnerability allowing an attacker to read arbitrary local server files using a crafted JSON message.
A Jackson Databind polymorphic-typing flaw through which a crafted JSON message can enable reading arbitrary local server files.
A Jackson Databind polymorphic-typing issue that permits arbitrary local-file reads through a crafted JSON message.
A Jackson Databind polymorphic-typing flaw that allows an attacker to read arbitrary local server files using a crafted JSON message.
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.