# CVE-2026-41282: Code injection in Nuclei

> Attackers can execute arbitrary code via DSL injection in ProjectDiscovery Nuclei when using non-default environment variable features against untrusted targets.

- **Severity:** Medium 4.0 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 20 Apr 2026
- **Updated:** 21 Apr 2026
- **Also known as:** GHSA-vrr8-h7fq-ghr8

## What is CVE-2026-41282?

CVE-2026-41282 is a medium-severity code injection vulnerability in ProjectDiscovery Nuclei, published on 20 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

ProjectDiscovery Nuclei 3 before 3.8.0 allows DSL expression injection. This affects use of -env-vars for multi-step templates against untrusted targets (not the default configuration).

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-41282?

It affects 1 product.


Products: Projectdiscovery Nuclei.

## How do I fix CVE-2026-41282?

Upgrade to a fixed version.

## Is CVE-2026-41282 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41282 exists.

## Other vulnerabilities in ProjectDiscovery Nuclei

- [CVE-2023-37896](https://insights.sbomify.com/CVE-2023-37896/): Nuclei Path Traversal vulnerability (high 7.5)
- [CVE-2024-43405](https://insights.sbomify.com/CVE-2024-43405/): Nuclei Template Signature Verification Bypass (high 7.4)
- [CVE-2024-27920](https://insights.sbomify.com/CVE-2024-27920/): Unsigned code template execution through workflows in projectdiscovery/nuclei (high 7.4)
- [CVE-2026-41646](https://insights.sbomify.com/CVE-2026-41646/): Nuclei: Local File Read via require() Module Loader Bypass (medium 5.5)
- [CVE-2026-41645](https://insights.sbomify.com/CVE-2026-41645/): Nuclei: Environment variable disclosure via Response-Derived DSL Expressions (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-41282 and fix it if it is affected.

What it is: CVE-2026-41282 is a medium-severity code injection vulnerability in ProjectDiscovery Nuclei, published on 20 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41282 exists.

Affected product: ProjectDiscovery Nuclei. 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-2026-41282/ (Markdown: https://insights.sbomify.com/CVE-2026-41282/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-41282
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41282
- OSV: https://osv.dev/vulnerability/CVE-2026-41282

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-41282/
Summaries are generated and may contain mistakes; the official description above is the record.