CVE-2025-69873
Summary
| CVE | CVE-2025-69873 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-02-11 19:15:50 UTC |
| Updated | 2026-06-30 05:17:30 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.004920000 probability, percentile 0.386670000 (date 2026-07-03)
Problem Types: CWE-1333 | CWE-400 | CWE-1333 CWE-1333 Inefficient Regular Expression Complexity | CWE-400 CWE-400 Uncontrolled Resource Consumption | CWE-1333 Inefficient Regular Expression Complexity
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | ADP | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | [email protected] | Secondary | 2.9 | LOW | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | DECLARED | 2.9 | LOW | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:5807 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:5910 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:13512 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:10093 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:7314 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| access.redhat.com/security/cve/CVE-2025-69873 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| github.com/ajv-validator/ajv/releases/tag/v6.14.0 | [email protected] | github.com | |
| github.com/ajv-validator/ajv/pull/2588 | [email protected] | github.com | |
| security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-69873.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:14774 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6802 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:5907 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6568 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:9742 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69873-ajv... | [email protected] | github.com | |
| access.redhat.com/errata/RHSA-2026:5168 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26214 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26211 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6277 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:33371 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:16874 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:15091 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6309 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| github.com/ajv-validator/ajv/pull/2590 | [email protected] | github.com | |
| access.redhat.com/errata/RHSA-2026:6567 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| github.com/advisories/GHSA-2g4f-4pwh-qvx6 | [email protected] | github.com | |
| access.redhat.com/errata/RHSA-2026:6192 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| github.com/github/advisory-database/pull/6991 | [email protected] | github.com | |
| access.redhat.com/errata/RHSA-2026:19712 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:6497 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-02-11T19:01:32.953Z | Reported to Red Hat. |
| ADP | 2026-02-11T00:00:00.000Z | Made public. |
Solutions
ADP: RHSA-2026:33371: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 Server
ADP: RHSA-2026:13512: Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9
ADP: RHSA-2026:6277: Red Hat Ansible Automation Platform 2.6 for RHEL 9
ADP: RHSA-2026:16874: Network Observability (NETOBSERV) 1.11.2
ADP: RHSA-2026:6309: Red Hat Ansible Automation Platform 2.6
ADP: RHSA-2026:9742: Red Hat Developer Hub 1.8
ADP: RHSA-2026:6802: Red Hat Developer Hub 1.9
ADP: RHSA-2026:5807: Red Hat OpenShift AI 2.16
ADP: RHSA-2026:19712: Red Hat OpenShift AI 3.3
ADP: RHSA-2026:15091: Red Hat OpenShift Container Platform 4.14
ADP: RHSA-2026:14774: Red Hat OpenShift Container Platform 4.15
ADP: RHSA-2026:5910: Red Hat OpenShift Container Platform 4.16
ADP: RHSA-2026:5907: Red Hat OpenShift Container Platform 4.17
ADP: RHSA-2026:10093: Red Hat OpenShift Container Platform 4.19
ADP: RHSA-2026:6192: Red Hat OpenShift Dev Spaces 3.27
ADP: RHSA-2026:7314: Red Hat Quay 3.14
ADP: RHSA-2026:6568: Red Hat Quay 3.15
ADP: RHSA-2026:6497: Red Hat Quay 3.16
ADP: RHSA-2026:6567: Red Hat Quay 3.16
ADP: RHSA-2026:5168: Red Hat Quay 3.9
ADP: RHSA-2026:26214: Red Hat Satellite 6.18
ADP: RHSA-2026:26211: Red Hat Satellite 6.18
Workarounds
ADP: To mitigate this issue, disable the $data feature if your application does not require it. If $data must be used, implement strict validation of the input fields that are referenced by the pattern keyword to ensure they contain only expected and safe characters.