CVE•Published 2026-07-23•Modified 2026-07-23•1 article on news•6 live references•NVD data
CVE-2026-16723
Vulnerability data via NVD (ingested)
CVSS v3.1
9.0
CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS percentile
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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.
Timeline
Published 2026-07-23
Modified 2026-07-23
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-16723Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-16723Censys host search filtered to this CVE id.
grep.app
CVE-2026-16723Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-16723GitHub code search for direct mentions.
Google dork
"CVE-2026-16723" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (8)
CVE-2026-167238 repos
nomi-sec/PoC-in-GitHubunknown
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
0rangec3t/Black-catPython
Claude Code RedTeam Skill — Hypothesis-Driven Cognitive Architecture。一个假设-证据驱动的红队skill
dinosn/fastjson-jsontype-rce-labPython
Docker labs + defensive scanner for fastjson remote-class-load RCE. fastjson 1.2.66-1.2.83: @JSONType resource probe (CVE-2026-16723). fastjson2 2.0.57: attacker @type reaches load…
1dayexploit/1day-archivePython
Technical deep-dives and root cause analyses of recently disclosed CVEs - reverse engineering patches, building proof-of-concepts, and documenting exploitation techniques in the 1-…
1diot9/FastjsonExpToolkitPython
Fastjson全版本利用工具，支持CLI、Web界面、MCP，针对LLM调用优化。
learner330/fastjson-cve-2026-16723Python
why-success/fastjson-rce-labJava
Fastjson 1.2.83 RCE 靶场环境 (CVE-2026-16723)
timoguin/starsunknown
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