Vulnerability · Published Jan 13, 2026 · Assigned by redhat
CVE-2026-0716Libsoup: out-of-bounds read in libsoup websocket frame processing
Medium 4.8
In plain English
A medium-severity security flaw in Red Hat Enterprise Linux 10 from Red Hat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libsoup2.4 | no fix listed | DEBIAN-CVE-2026-0716 |
| Debian:13 | libsoup2.4 | no fix listed | DEBIAN-CVE-2026-0716 |
| Debian:12 | libsoup3 | no fix listed | DEBIAN-CVE-2026-0716 |
| Debian:13 | libsoup3 | no fix listed | DEBIAN-CVE-2026-0716 |
| Ubuntu:22.04:LTS | libsoup2.4 | no fix listed | UBUNTU-CVE-2026-0716 |
| Ubuntu:24.04:LTS | libsoup2.4 | no fix listed | UBUNTU-CVE-2026-0716 |
| Ubuntu:25.10 | libsoup2.4 | no fix listed | UBUNTU-CVE-2026-0716 |
| Ubuntu:26.10 | libsoup2.4 | no fix listed | UBUNTU-CVE-2026-0716 |
| Ubuntu:24.04:LTS | libsoup3 | no fix listed | UBUNTU-CVE-2026-0716 |
| Ubuntu:25.10 | libsoup3 | no fix listed | UBUNTU-CVE-2026-0716 |
| Ubuntu:26.04:LTS | libsoup3 | no fix listed | UBUNTU-CVE-2026-0716 |
| Ubuntu:26.10 | libsoup3 | no fix listed | UBUNTU-CVE-2026-0716 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-805 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
References
- https://access.redhat.com/security/cve/CVE-2026-0716 vdb-entry, x_refsource_REDHAT
- RHBZ#2427896 issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/476