CVE-2026-0716
published 2026-01-13CVE-2026-0716: 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…
PriorityP424medium4.8CVSS 3.1
AVNACHPRNUINSUCLINAL
EPSS
0.26%
17.1th percentile
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
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | libsoup2.4 | < libsoup3 3.6.5-9 (forky) | libsoup3 3.6.5-9 (forky) |
| debian | libsoup3 | < libsoup3 3.6.5-9 (forky) | libsoup3 3.6.5-9 (forky) |
| debian | libsoup3 | — | — |
CVSS provenance
nvdv3.14.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
osv4.8MEDIUM
vendor_debian4.8MEDIUM
vendor_redhat4.8MEDIUM
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GHSA
The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected.
ghsa_unreviewed·2026-07-14·CVSS 4.8
CVE-2026-12478 [MEDIUM] CWE-125 The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected.
The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected. A malicious WebSocket server can send a crafted unmasked frame with a payload length near UINT64_MAX to trigger an OOB read in a libsoup-based client when max_incoming_payload_size is set to 0.
GHSA
GHSA-7rq6-mh5f-rp2q: A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages
ghsa_unreviewed·2026-01-14
CVE-2026-0716 [MEDIUM] CWE-805 GHSA-7rq6-mh5f-rp2q: A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages
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.
OSV
CVE-2026-0716: A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages
osv·2026-01-13·CVSS 4.8
CVE-2026-0716 [MEDIUM] CVE-2026-0716: A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages
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.
Red Hat
libsoup: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path)
vendor_redhat·2026-04-27·CVSS 4.8
CVE-2026-12478 [MEDIUM] CWE-125 libsoup: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path)
libsoup: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path)
The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected. A malicious WebSocket server can send a crafted unmasked frame with a payload length near UINT64_MAX to trigger an OOB read in a libsoup-based client when max_incoming_payload_size is set to 0.
Statement: This vulnerability is rated Moderate for Red Hat because it requires a non-default configuration where max_incoming_payload_size is explicitly set to 0 or unset in libsoup's WebSocket frame processing. In typical Red Hat deployments, this configuration is not enabled by default, limiting the exposure
Red Hat
libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing
vendor_redhat·2026-01-08·CVSS 4.8
CVE-2026-0716 [MEDIUM] CWE-805 libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing
libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing
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.
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 configu
Debian
CVE-2026-0716: libsoup2.4 - A flaw was found in libsoup’s WebSocket frame processing when handling incoming ...
vendor_debian·2026·CVSS 4.8
CVE-2026-0716 [MEDIUM] CVE-2026-0716: libsoup2.4 - A flaw was found in libsoup’s WebSocket frame processing when handling incoming ...
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.
Scope: local
bookworm: open
bullseye: open
trixie: open
No detection rules found.
No public exploits indexed.
Wiz
CVE-2026-0716 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 4.8
CVE-2026-0716 [MEDIUM] CVE-2026-0716 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-0716 :
CBL Mariner vulnerability analysis and mitigation
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.
Source : NVD
## 4.8
Score
Published January 13, 2026
Severity MEDIUM
CNA Score 4.8
Affected Technologies
CBL Mariner
Linux Debian
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 17.2
Exploitation Probability (EPSS) 0.1
Affected packages and lib
Bugzilla
CVE-2026-12478 libsoup3: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path) [fedora-all]
bugzilla·2026-07-14·CVSS 4.8
CVE-2026-12478 [MEDIUM] CVE-2026-12478 libsoup3: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path) [fedora-all]
CVE-2026-12478 libsoup3: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path) [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
https://gitlab.gnome.org/GNOME/libsoup/-/work_items/476#note_2695744
https://redhat.atlassian.net/browse/PSIRTSUPT-8846
Bugzilla
CVE-2026-12478 libsoup: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path)
bugzilla·2026-06-16·CVSS 4.8
CVE-2026-12478 [MEDIUM] CVE-2026-12478 libsoup: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path)
CVE-2026-12478 libsoup: Incomplete fix for CVE-2026-0716: Out-of-bounds read in libsoup WebSocket frame processing (unmasked path)
https://gitlab.gnome.org/GNOME/libsoup/-/work_items/476#note_2695744
https://redhat.atlassian.net/browse/PSIRTSUPT-8846
Bugzilla
CVE-2026-0716 libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing [fedora-42]
bugzilla·2026-01-08·CVSS 4.8
CVE-2026-0716 [MEDIUM] CVE-2026-0716 libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing [fedora-42]
CVE-2026-0716 libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all
Bugzilla
CVE-2026-0716 libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing
bugzilla·2026-01-08·CVSS 4.8
CVE-2026-0716 [MEDIUM] CVE-2026-0716 libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing
CVE-2026-0716 libsoup: Out-of-Bounds Read in libsoup WebSocket Frame Processing
An out-of-bounds read vulnerability exists in the process_frame() function of libsoup’s SoupWebSocketConnection. When max_incoming_payload_size is explicitly set to 0, improper bounds handling allows the function to read beyond the allocated buffer while processing WebSocket frames. This condition can lead to memory disclosure or application instability. Exploitation requires a non-default configuration and a remote attacker capable of sending crafted WebSocket frames.
Bugzilla
CVE-2025-0716 icecat: AngularJS improper sanitization in SVG '<image>' element [fedora-42]
bugzilla·2025-04-30·CVSS 4.8
CVE-2025-0716 [MEDIUM] CVE-2025-0716 icecat: AngularJS improper sanitization in SVG '<image>' element [fedora-42]
CVE-2025-0716 icecat: AngularJS improper sanitization in SVG '' element [fedora-42]
More information about this security flaw is available in the following bug:
https://bugzilla.redhat.com/show_bug.cgi?id=2362958
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Pack
Bugzilla
CVE-2025-0716 grafana: AngularJS improper sanitization in SVG '<image>' element [fedora-42]
bugzilla·2025-04-30·CVSS 4.8
CVE-2025-0716 [MEDIUM] CVE-2025-0716 grafana: AngularJS improper sanitization in SVG '<image>' element [fedora-42]
CVE-2025-0716 grafana: AngularJS improper sanitization in SVG '' element [fedora-42]
More information about this security flaw is available in the following bug:
https://bugzilla.redhat.com/show_bug.cgi?id=2362958
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Pac
Bugzilla
CVE-2025-0716 thunderbird: AngularJS improper sanitization in SVG '<image>' element [fedora-42]
bugzilla·2025-04-30·CVSS 4.8
CVE-2025-0716 [MEDIUM] CVE-2025-0716 thunderbird: AngularJS improper sanitization in SVG '<image>' element [fedora-42]
CVE-2025-0716 thunderbird: AngularJS improper sanitization in SVG '' element [fedora-42]
More information about this security flaw is available in the following bug:
https://bugzilla.redhat.com/show_bug.cgi?id=2362958
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
2026-01-13
Published