CVE-2025-5399

Due to a mistake in libcurl's WebSocket code, a malicious server can send a particularly crafted packet which makes libcurl get trapped in an endless busy-loop.

There is no other way for the application to escape or exit this loop other than killing the thread/process.

This might be used to DoS libcurl-using application.

References

Affected packages

Alpine:v3.22 / curl

Package

Name: curl
Purl: pkg:apk/alpine/curl?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

8.14.1-r0

Affected versions

7.*

7.19.2-r0

7.19.2-r1

7.19.4-r0

7.19.5-r0

7.19.6-r0

7.19.7-r0

7.19.7-r1

7.20.1-r0

7.20.1-r1

7.21.0-r0

7.21.1-r0

7.21.2-r0

7.21.3-r0

7.21.3-r1

7.21.4-r0

7.21.4-r1

7.21.5-r0

7.21.5-r1

7.21.6-r0

7.21.7-r0

7.21.7-r1

7.21.7-r2

7.22.0-r0

7.23.1-r0

7.24.0-r0

7.25.0-r0

7.26.0-r0

7.27.0-r0

7.27.0-r1

7.28.0-r0

7.28.1-r0

7.29.0-r0

7.30.0-r0

7.31.0-r0

7.32.0-r0

7.33.0-r0

7.33.0-r1

7.34.0-r0

7.34.0-r1

7.35.0-r0

7.36.0-r0

7.37.0-r0

7.37.1-r0

7.38.0-r0

7.39.0-r0

7.40.0-r0

7.41.0-r0

7.42.0-r0

7.42.1-r0

7.42.1-r1

7.43.0-r0

7.44.0-r0

7.45.0-r0

7.45.0-r1

7.46.0-r0

7.46.0-r1

7.46.0-r2

7.47.0-r0

7.47.1-r0

7.48.0-r0

7.49.0-r0

7.49.1-r0

7.50.0-r0

7.50.1-r0

7.50.2-r0

7.50.3-r0

7.50.3-r1

7.51.0-r0

7.51.0-r1

7.52.0-r0

7.52.1-r0

7.52.1-r1

7.53.0-r0

7.53.1-r0

7.53.1-r1

7.53.1-r2

7.53.1-r3

7.54.0-r0

7.54.1-r0

7.55.0-r0

7.55.1-r0

7.56.0-r0

7.56.1-r0

7.56.1-r1

7.57.0-r0

7.58.0-r0

7.58.0-r1

7.58.0-r2

7.59.0-r0

7.59.0-r1

7.60.0-r0

7.60.0-r1

7.61.0-r0

7.61.1-r0

7.62.0-r0

7.62.0-r1

7.62.0-r2

7.63.0-r0

7.64.0-r0

7.64.0-r1

7.64.1-r0

7.64.1-r1

7.64.1-r2

7.64.1-r3

7.65.0-r0

7.65.1-r0

7.65.3-r0

7.66.0-r0

7.67.0-r0

7.68.0-r0

7.69.0-r0

7.69.0-r1

7.69.1-r0

7.70.0-r0

7.70.0-r1

7.70.0-r2

7.71.0-r0

7.71.0-r1

7.71.1-r0

7.72.0-r0

7.73.0-r0

7.74.0-r0

7.75.0-r0

7.76.0-r0

7.76.1-r0

7.77.0-r0

7.77.0-r1

7.78.0-r0

7.78.0-r1

7.78.0-r2

7.79.0-r0

7.79.1-r0

7.80.0-r0

7.81.0-r0

7.81.0-r1

7.82.0-r0

7.82.0-r1

7.83.0-r0

7.83.1-r0

7.83.1-r1

7.84.0-r0

7.84.0-r1

7.84.0-r2

7.85.0-r0

7.86.0-r0

7.86.0-r1

7.87.0-r0

7.87.0-r1

7.87.0-r2

7.87.0-r3

7.88.0-r0

7.88.0-r1

7.88.1-r0

7.88.1-r1

8.*

8.0.0-r0

8.0.1-r0

8.0.1-r1

8.0.1-r2

8.0.1-r3

8.1.0-r0

8.1.0-r1

8.1.0-r2

8.1.0-r3

8.1.1-r0

8.1.1-r1

8.1.2-r0

8.1.2-r1

8.1.2-r2

8.2.0-r0

8.2.0-r1

8.2.1-r0

8.3.0-r0

8.3.0-r1

8.4.0-r0

8.5.0-r0

8.5.0-r1

8.6.0-r0

8.6.0-r1

8.7.1-r0

8.8.0-r0

8.8.0-r1

8.9.0-r0

8.9.1-r0

8.9.1-r1

8.9.1-r2

8.10.0-r0

8.10.0-r1

8.10.1-r0

8.11.0-r0

8.11.0-r1

8.11.0-r2

8.11.1-r0

8.11.1-r1

8.12.0-r0

8.12.1-r0

8.12.1-r1

8.13.0-r0

8.13.0-r1

8.14.0-r0

8.14.0-r1

8.14.0-r2

Debian:13 / curl

Package

Name: curl
Purl: pkg:deb/debian/curl?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

8.14.1-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Git / github.com/curl/curl

Affected ranges

Type: GIT
Repo: https://github.com/curl/curl
Events: Introduced

1c3149881769e7bd79b072e48374e4c2b3678b2f

Fixed

fdb8a789d2b446b77bd7cdd2eff95f6cbc814cf4

Affected versions

Other

curl-8_13_0

curl-8_14_0