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CVE-2025-67221

28
FAUCET Score

CVE-2025-67221 is a high-severity vulnerability affecting the orjson.dumps function in orjson versions up to 3.11.4, where it fails to limit recursion for deeply nested JSON documents. This allows an unauthenticated attacker to remotely trigger a denial-of-service condition with low attack complexity. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating potential interest.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.11.4CPE matchmatch criteria
cpe:2.3:a:ijl:orjson:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.55%
Probability of exploitation in next 30 days
EPSS Percentile
42.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0055 is in the 20th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (49)

pippatch availablevia ghsa
Product: orjsonFixed in: 3.11.6
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/de-minimal-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/de-minimal-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/de-supported-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/de-supported-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/ee-dellemc-openmanage-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/ee-minimal-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/ee-minimal-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/ee-supported-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/ee-supported-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/lightspeed-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/platform-resource-runner-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/aap-cloud-metrics-collector-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/ansible-dev-tools-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/de-minimal-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/de-minimal-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/de-supported-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/de-supported-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/ee-cloud-services-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/ee-minimal-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/ee-minimal-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/ee-supported-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/ee-supported-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/lightspeed-chatbot-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/lightspeed-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/platform-resource-runner-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/ansible-dev-tools-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/de-minimal-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/de-supported-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/ee-minimal-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/ee-supported-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/lightspeed-chatbot-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/lightspeed-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/mcp-tools-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-26/platform-resource-runner-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform/ee-minimal-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform/ee-minimal-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-tech-preview/ansible-devspaces-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux AI (RHEL AI) 3Fixed in: rhelai3/bootc-cuda-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux AI (RHEL AI) 3Fixed in: rhelai3/disk-image-cuda-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-caikit-nlp-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-caikit-tgis-serving-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift LightspeedFixed in: openshift-lightspeed/lightspeed-service-api-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-kserve-controller-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-kserve-router-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-kserve-storage-initializer-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-llama-stack-core-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-trustyai-ragas-lls-provider-dsp-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-kserve-agent-rhel9

Vendor Advisories (2)

pipGHSA-hx9q-6w63-j58vhigh

orjson does not limit recursion for deeply nested JSON documents

Jan 22, 2026
redhatCVE-2025-67221

orjson: orjson: Denial of Service due to unbounded recursion with deeply nested JSON documents

Jan 22, 2026

References

github.com / ijl/orjson
Product
github.com / kpatsakis/orjson_vulnerability
ExploitThird Party Advisory