# CVE-2025-69873

> CVE-2025-69873. CVSS 2.9 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-69873
Last updated: 2026-09-14T12:04:32Z

- Published: 2026-02-11 00:00 UTC · Updated: 2026-09-14 12:04 UTC · Assigner: mitre
- CVSS: 2.9 (CVSS 3.1) · Severity: Low · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS: 0.55%, 46th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-1333

## Description

ajv (Another JSON Schema Validator) before 8.18.0 is vulnerable to Regular Expression Denial of Service (ReDoS) when the $data option is enabled. The pattern keyword accepts runtime data via JSON Pointer syntax ($data reference), which is passed directly to the JavaScript RegExp() constructor without validation. An attacker can inject a malicious regex pattern (e.g., "^(a\|a)\*$") combined with crafted input to cause catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with each additional character doubling execution time. This enables complete denial of service with a single HTTP request against any API using ajv with $data: true for dynamic schema validation. This issue is also fixed in version 6.14.0.

## Affected vendors and products

- ajv.js: ajv
- Red Hat: Confidential Compute Attestation
- Red Hat: Cryostat 4
- Red Hat: Gatekeeper 3
- Red Hat: Logging Subsystem for Red Hat OpenShift
- Red Hat: Multicluster Engine for Kubernetes
- Red Hat: Network Observability Operator
- Red Hat: Red Hat Advanced Cluster Management for Kubernetes 2
- Red Hat: Red Hat Advanced Cluster Security 4
- Red Hat: Red Hat AMQ Broker 7
- Red Hat: Red Hat Ansible Automation Platform 2
- Red Hat: Red Hat Ansible Automation Platform 2.5 for RHEL 8
- Red Hat: Red Hat Ansible Automation Platform 2.5 for RHEL 9
- Red Hat: Red Hat Ansible Automation Platform 2.6 for RHEL 9
- Red Hat: Red Hat build of Apache Camel for Spring Boot 4
- Red Hat: Red Hat build of Apache Camel - HawtIO 4
- Red Hat: Red Hat build of Apicurio Registry 3
- Red Hat: Red Hat Build of Keycloak
- Red Hat: Red Hat Connectivity Link 1
- Red Hat: Red Hat Data Grid 8
- Red Hat: Red Hat Directory Server 11
- Red Hat: Red Hat Directory Server 12
- Red Hat: Red Hat Directory Server 13
- Red Hat: Red Hat Enterprise Linux AI (RHEL AI) 3
- Red Hat: Red Hat Fuse 7
- Red Hat: Red Hat JBoss Enterprise Application Platform 7
- Red Hat: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7
- Red Hat: Red Hat JBoss Enterprise Application Platform 8
- Red Hat: Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat: Red Hat OpenShift AI (RHOAI)
- Red Hat: Red Hat OpenShift Container Platform 4
- Red Hat: Red Hat Process Automation 7
- Red Hat: streams for Apache Kafka 2
- Red Hat: streams for Apache Kafka 3

## Tracked companies

- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-69873)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-69873)
- [https://github.com/advisories/GHSA-2g4f-4pwh-qvx6](https://github.com/advisories/GHSA-2g4f-4pwh-qvx6)
- [https://github.com/ajv-validator/ajv/pull/2588](https://github.com/ajv-validator/ajv/pull/2588)
- [https://github.com/ajv-validator/ajv/pull/2590](https://github.com/ajv-validator/ajv/pull/2590)
- [https://github.com/ajv-validator/ajv/releases/tag/v6.14.0](https://github.com/ajv-validator/ajv/releases/tag/v6.14.0)
- [https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69873-ajv-ReDoS.md](https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69873-ajv-ReDoS.md)
- [https://github.com/github/advisory-database/pull/6991](https://github.com/github/advisory-database/pull/6991)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-69873 · Markdown: https://rewindex.com/cve/CVE-2025-69873.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-69873 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:17:04.393Z