# CVE-2026-0716: Libsoup: out-of-bounds read in libsoup websocket frame processing

> An out-of-bounds read in libsoup's WebSocket processing can expose memory or crash applications when maximum payload size is unset.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 13 Jan 2026
- **Updated:** 16 Sep 2026
- **Also known as:** AZL-74640, AZL-74643, DEBIAN-CVE-2026-0716, ECHO-14e3-a93d-99ba, GHSA-7rq6-mh5f-rp2q, SUSE-SU-2026:0847-1, SUSE-SU-2026:0886-1, SUSE-SU-2026:0894-1, SUSE-SU-2026:1004-1, SUSE-SU-2026:1179-1, SUSE-SU-2026:20737-1, UBUNTU-CVE-2026-0716

## What is CVE-2026-0716?

CVE-2026-0716 is a medium-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 13 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-805 (Buffer Access with Incorrect Length Value)

## Which versions are affected by CVE-2026-0716?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `libsoup` | SUSE:Linux Enterprise Micro 5.2 | All versions | 2.68.4-150200.4.36.1 |
| `libsoup2` | SUSE:Linux Enterprise Micro 5.3 | All versions | 2.74.2-150400.3.34.1 |
| `libsoup2` | SUSE:Linux Enterprise Micro 5.4 | All versions | 2.74.2-150400.3.34.1 |
| `libsoup2` | SUSE:Linux Enterprise Micro 5.5 | All versions | 2.74.2-150400.3.34.1 |
| `libsoup` | SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 3.4.4-150600.3.42.1 |
| `libsoup2` | SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 2.74.3-150600.4.33.1 |
| `libsoup` | SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 2.62.2-5.40.1 |
| `libsoup` | SUSE:Linux Micro 6.1 | All versions | 3.4.4-slfo.1.1_8.1 |
| `libsoup` | openSUSE:Leap 15.6 | All versions | 3.4.4-150600.3.42.1 |
| `libsoup2` | openSUSE:Leap 15.6 | All versions | 2.74.3-150600.4.33.1 |

## How do I fix CVE-2026-0716?

Apply the vendor's patch.

## Is CVE-2026-0716 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0716 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-0716 and fix it if it is affected.

What it is: CVE-2026-0716 is a medium-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 13 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0716 exists.

Affected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-0716/ (Markdown: https://insights.sbomify.com/CVE-2026-0716/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-0716
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-0716
- OSV: https://osv.dev/vulnerability/CVE-2026-0716

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-0716/
Summaries are generated and may contain mistakes; the official description above is the record.