DEBIAN-CVE-2026-44660

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Source
https://security-tracker.debian.org/tracker/CVE-2026-44660
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44660.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-44660
Upstream
Published
2026-05-27T21:16:17Z
Modified
2026-09-01T16:06:44Z
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

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump() writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operation leaks the full size of the serialized payload. This vulnerability is fixed in 5.12.1.

References

Affected packages

Debian:12 / ujson

Package

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

Affected ranges

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

Affected versions

5.*
5.7.0-1
5.8.0-1
5.9.0-1
5.10.0-1
5.11.0-1
5.11.0-2
5.11.0-3
5.13.0-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44660.json"

Debian:13 / ujson

Package

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

Affected ranges

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

Affected versions

5.*
5.10.0-1
5.11.0-1
5.11.0-2
5.11.0-3
5.13.0-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44660.json"

Debian:14 / ujson

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.13.0-1

Affected versions

5.*
5.10.0-1
5.11.0-1
5.11.0-2
5.11.0-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44660.json"