CVE-2026-16723

PUBLISHED
Published: 23 Jul 2026, 08:26
Last modified:23 Jul 2026, 08:26

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9 CRITICAL
v3.1 (cve.org)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Jul 2026, 08:26
Published
Vulnerability first disclosed

Description

A remote code execution (RCE) vulnerability exists in fastjson 1.2.68 through 1.2.83. This vulnerability is exploitable under fastjson's stock default configuration — no AutoType enablement required, no classpath gadget required.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

  • CWE-502•Deserialization of Untrusted Data

    The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Systems

  • alibaba•fastjson

    ≥ 1.2.68, ≤ 1.2.83

References (1)