Full Report
Nodejs security advisory (AV26-624)
Analysis Summary
# Vulnerability: Node.js June 2026 Security Releases
## CVE Details
*Note: The provided advisory covers multiple security fixes typically released in a batch. Specific CVE identifiers and CVSS scores are contained within the linked vendor documentation (referenced as June 18, 2026, releases).*
- **CVE ID:** [Pending/Multiple] (Refer to hxxps[://]nodejs[.]org/en/blog/vulnerability/june-2026-security-releases)
- **CVSS Score:** [Variable] (Typically ranging from Medium to High for Node.js core updates)
- **CWE:** [Specific CWEs vary by fix, commonly including Permissions/Access Control or Buffer issues]
## Affected Systems
- **Products:** Node.js Runtime Environment
- **Versions:**
- Node.js v22: Versions prior to v22.23.0
- Node.js v24: Versions prior to v24.17.0
- Node.js v26: Versions prior to v26.3.1
- **Configurations:** Systems utilizing the Node.js runtime for server-side applications or development tooling.
## Vulnerability Description
This advisory covers a scheduled security release from the Node.js project. Historically, these updates address flaws in the core runtime, such as:
1. **Experimental Permission Model Bypasses:** Fixes for vulnerabilities that allow code to escape restricted environments.
2. **HTTP/Network Handling:** Resolution of memory corruption or DoS flaws in the internal HTTP parsers or fetch API.
3. **Dependency Updates:** Security patches for integrated OpenSSL or zlib components.
## Exploitation
- **Status:** [Not exploited/PoC available] - Node.js security releases are generally proactive; however, PoCs often emerge shortly after the source code diffs are public.
- **Complexity:** Low to Medium
- **Attack Vector:** Network (Most common for Node.js vulnerabilities affecting web servers)
## Impact
- **Confidentiality:** Variable (High if filesystem bypasses are involved)
- **Integrity:** Variable
- **Availability:** High (If the flaw allows for Denial of Service)
## Remediation
### Patches
Users are strongly advised to upgrade to the following patched versions:
- **Node.js v22.23.0** (LTS/Current)
- **Node.js v24.17.0**
- **Node.js v26.3.1**
### Workarounds
- No specific workarounds are provided. Upgrading the runtime is the only recommended mitigation to ensure all core library vulnerabilities are addressed.
## Detection
- **Indicators of Compromise:** Monitor application logs for unusual crashes (Potential DoS), unexpected filesystem access, or unauthorized process spawning.
- **Detection methods and tools:**
- Use `node -v` to check the current version of the runtime.
- Utilize Software Composition Analysis (SCA) tools to identify outdated Node.js binaries in container images and server environments.
## References
- Vendor Security Blog: hxxps[://]nodejs[.]org/en/blog/vulnerability/june-2026-security-releases
- Node.js Official Releases: hxxps[://]nodejs[.]org/en/blog/release/
- Canadian Centre for Cyber Security (Source): hxxps[://]www[.]cyber[.]gc[.]ca/fr/alertes-avis/bulletin-securite-nodejs-av26-624