Vulnerability · Published Sep 17, 2026 · Assigned by VulnCheck
CVE-2026-93435redis-parser through 3.0.0 Denial of Service via Unbounded Recursion
High 7.5
In plain English
A high-severity security flaw in redis-parser from NodeRedis. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Official description
redis-parser through 3.0.0 contains a denial of service vulnerability in the RESP protocol parser that allows malicious Redis endpoints to crash the client process through unbounded recursion on nested arrays. Attackers can send crafted RESP byte streams with repeated array headers that exhaust the V8 call stack, causing an uncaught RangeError that terminates the Node.js process without triggering error handling callbacks.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NodeRedis | redis-parser | 0 – through 3.0.0 |
Weakness: CWE-674 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/redis/ioredis/issues/2108 issue-tracking
- https://github.com/NodeRedis/node-redis-parser/issues/66 issue-tracking
- https://github.com/NodeRedis/node-redis-parser/blob/701655430f5f7d9ca00892a02f7eefcbc1193a98/lib/parser.js#L204-L213 technical-description
- https://github.com/NodeRedis/node-redis-parser/blob/701655430f5f7d9ca00892a02f7eefcbc1193a98/lib/parser.js#L291-L306 technical-description
- https://github.com/NodeRedis/node-redis-parser product
- VulnCheck Advisory: redis-parser through 3.0.0 Denial of Service via Unbounded Recursion third-party-advisory