# CVE-2026-93435: redis-parser through 3.0.0 Denial of Service via Unbounded Recursion

> A malicious Redis server can crash a Node.js client application by sending deeply nested RESP arrays, causing a stack overflow in the redis-parser library.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 Sep 2026
- **Updated:** 28 Sep 2026
- **Also known as:** ECHO-0303-c934-7a14, GHSA-gf2v-78w3-qhcv

## What is CVE-2026-93435?

CVE-2026-93435 is a high-severity denial of service vulnerability in NodeRedis redis-parser, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### 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.

Weakness: CWE-674 (Uncontrolled Recursion)

## Which versions are affected by CVE-2026-93435?


## How do I fix CVE-2026-93435?

Upgrade to a fixed version.

## Is CVE-2026-93435 being exploited?

There is no known exploitation of CVE-2026-93435 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-93435 and fix it if it is affected.

What it is: CVE-2026-93435 is a high-severity denial of service vulnerability in NodeRedis redis-parser, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-93435 in the wild and no public exploit code.

Affected product: NodeRedis redis-parser. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-93435/ (Markdown: https://insights.sbomify.com/CVE-2026-93435/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-93435
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-93435
- OSV: https://osv.dev/vulnerability/CVE-2026-93435

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-93435/
Summaries are generated and may contain mistakes; the official description above is the record.