← Vulnerability feed

Vulnerability record · CVE-2022-25845 · published 10 June 2022

CVE-2022-25845: Alibaba fastjson deserialization of untrusted data vulnerability

Alibaba · Fastjson

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 certain conditions. Exploiting this vulnerability allows attacking remote servers. Workaround: If upgrading is not possible, you can enable [safeMode](https://github.com/alibaba/fastjson/wiki/fastjson_safemode).

9.8 CVSS 3.1 Critical EPSS 19% · top 2.8% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score, v2 6.8
19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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 certain conditions. Exploiting this vulnerability allows attacking remote servers. Workaround: If upgrading is not possible, you can enable [safeMode](https://github.com/alibaba/fastjson/wiki/fastjson_safemode).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/alibaba/fastjson/commit/35db4adad70c32089542f23c272def1ad920a60d PatchThird Party Advisory
https://github.com/alibaba/fastjson/commit/8f3410f81cbd437f7c459f8868445d50ad301f15 PatchThird Party Advisory
https://github.com/alibaba/fastjson/releases/tag/1.2.83 Release NotesThird Party Advisory
https://github.com/alibaba/fastjson/wiki/security_update_20220523 Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-COMALIBABA-2859222 Third Party Advisory
https://www.ddosi.org/fastjson-poc/ ExploitThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory
https://github.com/alibaba/fastjson/commit/35db4adad70c32089542f23c272def1ad920a60d PatchThird Party Advisory
https://github.com/alibaba/fastjson/commit/8f3410f81cbd437f7c459f8868445d50ad301f15 PatchThird Party Advisory
https://github.com/alibaba/fastjson/releases/tag/1.2.83 Release NotesThird Party Advisory
https://github.com/alibaba/fastjson/wiki/security_update_20220523 Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-COMALIBABA-2859222 Third Party Advisory
https://www.ddosi.org/fastjson-poc/ ExploitThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory

Track CVE-2022-25845 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-22963Spring Cloud Function routing expression SpEL injection RCESpring Cloud Function versions 3.1.6, 3.2.2 and older unsupported versions allow a user to supply a crafted SpEL expression as a routing-expression w…KEVEPSS 100%analysed9.8CVE-2022-22965Spring Framework data binding remote code execution (Spring4Shell)Spring MVC and Spring WebFlux applications on JDK 9+ can be exploited through data binding to achieve remote code execution. The known exploit path r…KEVEPSS 100%analysed9.8CVE-2022-23218Gnu glibc classic buffer overflow vulnerabilityThe deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its path argument on t…EPSS 4.8%9.8CVE-2022-23219Gnu glibc classic buffer overflow vulnerabilityThe deprecated compatibility function clnt_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its hostname argument on …EPSS 4.3%9.8CVE-2021-3711OpenSSL SM2 decryption buffer overflowOpenSSL's SM2 decryption code miscalculates the output buffer size needed by EVP_PKEY_decrypt(), so the first sizing call can return a value smaller …EPSS 88%analysed9.8CVE-2017-18349Alibaba fastjson improper input validation vulnerabilityparseObject in Fastjson before 1.2.25, as used in FastjsonEngine in Pippo 1.11.0 and other products, allows remote attackers to execute arbitrary cod…EPSS 39%8.1CVE-2020-36183Fasterxml jackson-databind deserialization of untrusted data vulnerabilityFasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to org.docx4j.org.apache.…EPSS 4.9%8.1CVE-2020-36179Netapp cloud backup deserialization of untrusted data vulnerabilityFasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to oadd.org.apache.common…EPSS 17%

Source: NIST National Vulnerability Database (record CVE-2022-25845), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.