CVE-2017-18349

Exp

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.

Published: 2018-10-23 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-18349 is rated High Exploit Risk (88.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 88.69%, 100th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2017-18349

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2017-18349

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-09 88.90% 88.69% -0.21%
2 2026-03-05 90.83% 88.90% -1.93%
3 2026-03-04 — 90.83% —

Full EPSS history (54 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-18349

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2017-18349

GitHub Security Advisory for CVE-2017-18349

GHSA-xjrr-xv9m-4pw5 · Severity: critical · Ecosystem: maven — Improper Input Validation in alilibaba:fastjson

Affected software / configurations for CVE-2017-18349

Vendor Product Version Raw CPE
alibaba fastjson < 1.2.25 cpe:2.3:a:alibaba:fastjson:*:*:*:*:*:*:*:*
pippo pippo 1.11.0 cpe:2.3:a:pippo:pippo:1.11.0:*:*:*:*:*:*:*

References for CVE-2017-18349

URL Tags
https://fortiguard.com/encyclopedia/ips/44059 Mitigation Third Party Advisory
https://github.com/alibaba/fastjson/wiki/security_update_20170315 Mitigation Third Party Advisory
https://github.com/pippo-java/pippo/issues/466 Exploit Third Party Advisory
cvelogic Threat Intelligence