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Fencer Intel
medium 4.8

CVE-2026-0716 json

Libsoup: out-of-bounds read in libsoup websocket frame processing

published 9mo ago modified 4d ago also EUVD-2026-2591

cvss
4.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

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.

Patch / fix

  • libsoup Linux Micro 6.0 3.4.2-17.1
  • libsoup2 SLE Micro 5.5, SLE Micro 5.4, SLE Micro 5.3 2.74.2-150400.3.34.1
  • libsoup Linux Micro 6.1 3.4.4-slfo.1.1_8.1
  • libsoup SLE Module for Basesystem 15 SP7, openSUSE Leap 15.6 3.4.4-150600.3.42.1
  • libsoup2 SLE Module for Basesystem 15 SP7, openSUSE Leap 15.6 2.74.3-150600.4.33.1
  • libsoup SLE Micro 5.2 2.68.4-150200.4.36.1
  • libsoup2 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 +1 more 2.74.3-150600.4.24.1
  • libsoup2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +8 more 2.74.2-150400.3.26.1

suse advisories SUSE-SU-2026:4690-1SUSE-SU-2026:22920-1SUSE-SU-2026:1179-1SUSE-SU-2026:1004-1SUSE-SU-2026:20737-1SUSE-SU-2026:0894-1

  • libsoup2 openSUSE Leap 16.0 2.74.3-160000.4.1
  • libsoup2 openSUSE Tumbleweed 2.74.3-15.1
  • libsoup openSUSE Leap 16.0 3.6.5-160000.3.1
  • libsoup openSUSE Tumbleweed 3.6.5-11.1

opensuse advisories openSUSE-SU-2026:20354-1openSUSE-SU-2026:10166-1openSUSE-SU-2026:20142-1openSUSE-SU-2026:10040-1

  • libsoup Azure Linux 3.0 3.4.4-14
  • libsoup CBL-Mariner 2.0 3.0.4-12

azure linux advisories AZL-74640AZL-74643

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-0716 updated cvss 4.8

libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing

  • Red Hat Enterprise Linux 7 libsoup Red Hat Enterprise Linux 8 libsoup Red Hat Enterprise Linux 9 libsoup Red Hat Enterprise Linux 10 libsoup3
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 6 libsoup
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
9mo ago

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-805 Buffer Access with Incorrect Length Value

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.