CVE-2020-24275

Name: CVE-2020-24275
Creator: NVD / NIST
Published: 2023-07-20T20:15:09.94+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2020-24275 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A HTTP response header injection vulnerability in Swoole v4.5.2 allows attackers to execute arbitrary code via supplying a crafted URL.. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

0.69%

48.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Swoole	Swoole	4.5.2

References

https://blog.cal1.cn/post/HTTP%20Response%20Header%20Injection%20in%20Swoole%3C%3D4.5.2Exploit, Third Party Advisory
https://github.com/swoole/swoole-src/pull/3539Patch, Vendor Advisory
https://github.com/swoole/swoole-src/pull/3545Patch, Vendor Advisory
https://portswigger.net/kb/issues/00200200_http-response-header-injectionTechnical Description
https://blog.cal1.cn/post/HTTP%20Response%20Header%20Injection%20in%20Swoole%3C%3D4.5.2Exploit, Third Party Advisory
https://github.com/swoole/swoole-src/pull/3539Patch, Vendor Advisory
https://github.com/swoole/swoole-src/pull/3545Patch, Vendor Advisory
https://portswigger.net/kb/issues/00200200_http-response-header-injectionTechnical Description

Timeline

Published: Jul 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is 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.

How severe is CVE-2020-24275?

CVE-2020-24275 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24275?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-24275?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST