Linux · 
Debian · Security advisory · February 11, 2026
Debian · Security advisory · February 11, 2026DEBIAN-CVE-2025-69873: node-ajv security update
DEBIAN-CVE-2025-69873, released February 11, 2026, fixes 1 CVE in node-ajv (version 8.18.0~ds+~cs6.1.1-1). None of them is reported as exploited. Patch Radar priority: Routine.
Routine
CVEs closed
1
None rated Critical
Exploited
0
None reported
Highest CVSS
2.9
Base score, 0 to 10
Highest EPSS
0.0054
45th percentile
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| node-ajv | Debian 14 | 8.18.0~ds+~cs6.1.1-1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Routine | CVE-2025-69873 | 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. | 2.9 | 0.0054 | None reported |
Showing 1 to 1 of 1
1
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.