Critical severity · published Oct 23, 2018
CVE-2017-18349
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,…
9.8
CVSS
38.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)38.8% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FA
Fastjson · Alibaba
before 1.2.25 · source: NVD
PI
Pippo · Pippo
1.11.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18349
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18349
Mitigation
https://fortiguard.com/encyclopedia/ips/44059
Mitigation
https://github.com/alibaba/fastjson/wiki/security_update_20170315
Exploit
https://github.com/pippo-java/pippo/issues/466
More from Fastjson
10.0
CVE-2025-70974
Fastjson before 1.2.48 mishandles autoType because, when an @type key is in a JSON document, and the value of that key is the name of a Java class, there may be calls to certain…
9.8
CVE-2022-25845
The package com.alibaba:fastjson before 1.2.83 are vulnerable to Deserialization of Untrusted Data by bypassing the default autoType shutdown restrictions, which is possible under…
9.0
CVE-2026-16723
Remote Code Execution in fastjson 1.2.68–1.2.83
