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CVE-2022-33977

untangle vulnerable to XML Entity Expansion

7.5 HighFix available

untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts recursive entity references in DTDs. By exploiting this vulnerability, a remote unauthenticated attacker may cause a denial-of-service (DoS) condition on the server where the product is running.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.81%Up 0.7 points since Jul 26, 2022
90%50%10%1%

What each source reports

NVD Score used 7.5

untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts recursive entity references in DTDs. By exploiting this vulnerability, a remote unauthenticated attacker may cause a denial-of-service (DoS) condition on the server where the product is running.

Record
CVE-2022-33977
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-776
Updated
2026-11-02
CVE List No score

untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts recursive entity references in DTDs. By exploiting this vulnerability, a remote unauthenticated attacker may cause a denial-of-service (DoS) condition on the server where the product is running.

Record
CVE-2022-33977
Updated
2026-11-02
EUVDEUVD-2022-0349 No score

untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts recursive entity references in DTDs. By exploiting this vulnerability, a remote unauthenticated attacker may cause a denial-of-service (DoS) condition on the server where the product is running.

Record
EUVD-2022-0349
Updated
2026-11-03
GitHub AdvisoriesGHSA-7xr3-6ggc-wc9p 8.7

untangle vulnerable to XML Entity Expansion

Impact

An attacker may be able to cause a denial-of-service (DoS) condition on the server on which the product is running. This affects untangle versions up to and including 1.2.0

Patches

The problem has been fixed with version 1.2.1

Workarounds

None

References

https://jvn.jp/en/jp/JVN30454777/

For more information

If you have any questions or comments about this advisory:

Record
GHSA-7xr3-6ggc-wc9p
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-776
Updated
2026-11-02
OSVGHSA-7xr3-6ggc-wc9p 8.7

untangle vulnerable to XML Entity Expansion

Impact

An attacker may be able to cause a denial-of-service (DoS) condition on the server on which the product is running. This affects untangle versions up to and including 1.2.0

Patches

The problem has been fixed with version 1.2.1

Workarounds

None

References

https://jvn.jp/en/jp/JVN30454777/

For more information

If you have any questions or comments about this advisory:

Record
GHSA-7xr3-6ggc-wc9p
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-776
Updated
2026-11-02
OSV No score

untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts recursive entity references in DTDs. By exploiting this vulnerability, a remote unauthenticated attacker may cause a denial-of-service (DoS) condition on the server where the product is running.

Record
CVE-2022-33977
Updated
2026-11-02
OSVDEBIAN-CVE-2022-33977 No score

untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts recursive entity references in DTDs. By exploiting this vulnerability, a remote unauthenticated attacker may cause a denial-of-service (DoS) condition on the server where the product is running.

Record
DEBIAN-CVE-2022-33977
Updated
2026-11-03
OSVPYSEC-2022-243 No score

untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts recursive entity references in DTDs. By exploiting this vulnerability, a remote unauthenticated attacker may cause a denial-of-service (DoS) condition on the server where the product is running.

Record
PYSEC-2022-243
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
untangle
PyPI
before 1.2.1
1.2.1
python-untangle
Debian:12
before 1.2.1-1
1.2.1-1
python-untangle
Debian:13
before 1.2.1-1
1.2.1-1
python-untangle
Debian:14
before 1.2.1-1
1.2.1-1
untangle
PyPI
before 1.2.1, plus listed versions
0.30.3.10.4.01.0.01.1.01.1.11.2.0
1.2.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-33977 is a high vulnerability (CVSS 7.5) in Christian Stefanescu Untangle, published July 26, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.81%, the 78th percentile. Fixed in untangle 1.2.1.

References

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