CVE-2017-18349 — Improper Input Validation in alilibaba:fastjson

Description

parseObject in Fastjson before 1.2.25, as used in FastjsonEngine in Pippo 1.11.0 and other products, allows remote attackers to execute arbitrary code via a crafted JSON request, as demonstrated by a crafted rmi:// URI in the dataSourceName field of HTTP POST data to the Pippo /json URI, which is mishandled in AjaxApplication.java.

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 3 repositories

h0cksr/Fastjson--CVE-2017-18349- ★ 2 · Apr 14, 2022
dichen-L/CVE-2017-18349-fastjson1.2.24-vul ★ 0 · Nov 5, 2026

CVE-2017-18349漏洞环境与PoC
Dungsocool/CVE-2017-18349 ★ 0 · May 29, 2026

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Fastjson Insecure Deserialization - Remote Code Execution http/cves/2017/CVE-2017-18349.yaml

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

Affected packages

Ecosystem	Package	Affected	Fixed	Record
Maven	com.alibaba:fastjson	< 1.2.31	1.2.31	GHSA-xjrr-xv9m-4pw5
Maven	ro.pippo:pippo-fastjson	< 1.12.0	1.12.0	GHSA-xjrr-xv9m-4pw5