DEBIAN-CVE-2026-15711

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Source
https://security-tracker.debian.org/tracker/CVE-2026-15711
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15711.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-15711
Upstream
  • CVE-2026-15711
Published
2026-07-14T20:16:57Z
Modified
2026-09-21T08:47:30Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 ยง5.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.

References

Affected packages

Debian:12 / libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/debian/libsoup2.4?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.74.3-1
2.74.3-1+deb12u1
2.74.3-2
2.74.3-3
2.74.3-3.1~exp1
2.74.3-3.1~exp2
2.74.3-3.1~exp3
2.74.3-5
2.74.3-6
2.74.3-7
2.74.3-8
2.74.3-8.1
2.74.3-9
2.74.3-10
2.74.3-10.1
2.74.3-11

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15711.json"

Debian:13 / libsoup2.4

Package

Name
libsoup2.4
Purl
pkg:deb/debian/libsoup2.4?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.74.3-10.1
2.74.3-11

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15711.json"

Debian:12 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/debian/libsoup3?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.2.2-2
3.2.3-0+deb12u1
3.2.3-0+deb12u2
3.3.1-1
3.4.0-1
3.4.1-1
3.4.2-1
3.4.2-2
3.4.2-3
3.4.2-4
3.4.3-1
3.4.4-1
3.4.4-2
3.4.4-3
3.4.4-4
3.4.4-5
3.5.2-1
3.6.0-1
3.6.0-2
3.6.0-3
3.6.0-4
3.6.1-1
3.6.4-1
3.6.4-2
3.6.4-3
3.6.5-1
3.6.5-2
3.6.5-3
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-8
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15711.json"

Debian:13 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/debian/libsoup3?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.6.5-3
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-8
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15711.json"

Debian:14 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/debian/libsoup3?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.6.5-3
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-8
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-15711.json"