CVE-2026-0716

Publication date 11 March 2026

Last updated 11 March 2026

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages. If a non-default configuration is used where the maximum incoming payload size is unset, the library may read memory outside the intended bounds. This can cause unintended memory exposure or a crash. Applications using libsoup’s WebSocket support with this configuration may be impacted.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libsoup2.4	25.10 questing	Vulnerable, fix deferred
	25.04 plucky	Ignored end of life, was deferred [2026-03-11]
	24.04 LTS noble	Vulnerable, fix deferred
	22.04 LTS jammy	Vulnerable, fix deferred
	20.04 LTS focal	Vulnerable, fix deferred
	18.04 LTS bionic	Vulnerable, fix deferred
	16.04 LTS xenial	Vulnerable, fix deferred
libsoup3	25.10 questing	Vulnerable, fix deferred
	25.04 plucky	Ignored end of life, was deferred [2026-03-11]
	24.04 LTS noble	Vulnerable, fix deferred
	22.04 LTS jammy	Vulnerable, fix deferred

Notes

mdeslaur

original fix for this issue was incomplete, as of 2026-03-11, there is no complete fix yet

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libsoup3	Upstream: https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/518

Severity score breakdown

Parameter	Value
Base score	4.8 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

References

Other references

https://www.cve.org/CVERecord?id=CVE-2026-0716