# CVE-2026-90651: Security feature bypass in Socket Firewall

> Attackers can intercept traffic and modify package content or firewall decisions due to disabled TLS verification by default in Socket Firewall.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-jrp2-p3px-f5p5

## What is CVE-2026-90651?

CVE-2026-90651 is a high-severity vulnerability in Socket Firewall, published on 12 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Socket Firewall (socketdev/socket-registry-firewall) in registry mode before 2.0.0 does not verify upstream TLS certificates by default. When the api_ssl_verify and upstream_ssl_verify configuration keys are omitted from socket.yml, the generated configuration sets SOCKET_API_SSL_VERIFY='false' and UPSTREAM_SSL_VERIFY='false', and the OpenResty/Lua HTTP client used for outbound requests accepts any certificate, including self-signed and otherwise untrusted certificates, without validating the chain. An attacker positioned to intercept traffic between Socket Firewall and the Socket API or an upstream package registry can present a crafted certificate and modify responses in transit, including substituting malicious package content or altering the allow/block decisions the firewall enforces. Setting api_ssl_verify: true and upstream_ssl_verify: true enables verification; however, in versions before 1.1.334, the generated nginx configuration did not emit lua_ssl_trusted_certificate, and thus verification could not be used successfully without manually patching the generated configuration. Version 2.0.0 changes the default for both settings to true.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2026-90651?


## How do I fix CVE-2026-90651?

No fix has been published for CVE-2026-90651 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-90651 being exploited?

There is no known exploitation of CVE-2026-90651 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90651 and fix it if it is affected.

What it is: CVE-2026-90651 is a high-severity vulnerability in Socket Firewall, published on 12 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-2026-90651 in the wild and no public exploit code.

Affected product: Socket Firewall. 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-2026-90651/ (Markdown: https://insights.sbomify.com/CVE-2026-90651/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90651
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90651
- OSV: https://osv.dev/vulnerability/CVE-2026-90651

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90651/
Summaries are generated and may contain mistakes; the official description above is the record.