CVE-2022-25845: The package com.alibaba:fastjson before 1.2.83 are vulnerable to Deserialization of Untrusted Data by bypassin

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HIGH 8.1REMOTEUPGRADEDOWNGRADE

CVE-2022-25845 is a high-severity flaw (CVSS 8.1) affecting fastjson, communications cloud native core unified data repository. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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).

Why this priority

High severity
EPSS top 3%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	18.7% (top 3%)
CISA exploited list	No
Weakness	CWE-502
Published	2022-06-10
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: alibaba · oracle

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-06-10 20:15 UTCPublished CVE record published
2026-06-17 04:34 UTCUpdated Record last modified

alibaba fastjson UPGRADE

Affected: < 1.2.83

Fixed in: 1.2.83

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy fastjson || rpm -q fastjson || fastjson --version

2. UPGRADE to 1.2.83 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fastjson

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fastjson

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

oracle communications cloud native core unified data repository DOWNGRADE

Affected: 22.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 22.2.0

1. Check installed version

apt-cache policy communications-cloud-native-core-unified-data-repository || rpm -q communications-cloud-native-core-unified-data-repository || communications-cloud-native-core-unified-data-repository --version

2. No fixed release: DOWNGRADE to a release before 22.2.0 (Debian / Ubuntu)

apt-cache madison communications-cloud-native-core-unified-data-repository sudo apt install communications-cloud-native-core-unified-data-repository=<VERSION_BEFORE_22.2.0> sudo apt-mark hold communications-cloud-native-core-unified-data-repository

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list communications-cloud-native-core-unified-data-repository sudo dnf downgrade communications-cloud-native-core-unified-data-repository-<VERSION_BEFORE_22.2.0> sudo dnf versionlock add communications-cloud-native-core-unified-data-repository

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-25845?

fastjson: upgrade to 1.2.83; communications cloud native core unified data repository: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-25845 being exploited?

CVE-2022-25845 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-25845 affect?

CVE-2022-25845 affects fastjson, communications cloud native core unified data repository. Severity is high (CVSS 8.1). 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 att

How urgent is CVE-2022-25845?

Priority 63/100. High severity; EPSS top 3%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

GitHub vulnerabilities

Related CVEs

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References

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