---
title: "CVE-2026-0716\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-0716?format=md
keywords: index, follow
---

# CVE-2026-0716

Publication date 13 January 2026

Last updated 18 March 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**4.8 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2026-0716?format=md#impact-score)

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## 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](https://ubuntu.com/security/CVE-2026-0716?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libsoup2.4 | 26.04 LTS resolute | Vulnerable, fix deferred |
| 25.10 questing | Ignored end of life, was deferred [2026-03-11] |
| 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 | 26.04 LTS resolute | Vulnerable, fix deferred |
| 25.10 questing | Ignored end of life, was deferred [2026-03-11] |
| 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 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2026-0716?format=md#patch-details)

## Notes

---

### [mdeslaur](https://launchpad.net/~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?](https://ubuntu.com/security/cves/about#security)

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

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

4.8 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | None |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 4.8 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-0716)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-0716)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-0716)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-0716)

### Other references

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