DEBIAN-CVE-2026-57585

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Source
https://security-tracker.debian.org/tracker/CVE-2026-57585
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57585.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-57585
Upstream
Published
2026-06-30T22:16:57Z
Modified
2026-09-14T17:03:46Z
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

MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. If the Unpacker is used repeatedly after an error occurs, the process may crash with a SEGV. This issue has been fixed in version 1.2.1.

References

Affected packages

Debian:12 / python-msgpack

Package

Name
python-msgpack
Purl
pkg:deb/debian/python-msgpack?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.0.3-2
1.0.3-3
1.1.2-1
1.1.2-2
1.1.2-3
1.1.2-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57585.json"

Debian:13 / python-msgpack

Package

Name
python-msgpack
Purl
pkg:deb/debian/python-msgpack?arch=source&distro=trixie

Affected ranges

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

Affected versions

1.*
1.0.3-3
1.1.2-1
1.1.2-2
1.1.2-3
1.1.2-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57585.json"

Debian:14 / python-msgpack

Package

Name
python-msgpack
Purl
pkg:deb/debian/python-msgpack?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.1.2-3

Affected versions

1.*
1.0.3-3
1.1.2-1
1.1.2-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57585.json"