CVE-2023-26150
asyncua Improper Authentication vulnerability
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. Note: This issue is a result of missing checks for services that require an active session.
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
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. Note: This issue is a result of missing checks for services that require an active session.
- Record
CVE-2023-26150- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P - Weakness
- CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2023-0047
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. Note: This issue is a result of missing checks for services that require an active session.
- Record
EUVD-2023-0047- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2894-qcqf-g23g
asyncua Improper Authentication vulnerability
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication.
Note:
This issue is a result of missing checks for services that require an active session.
- Record
GHSA-2894-qcqf-g23g- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
NVD
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. Note: This issue is a result of missing checks for services that require an active session.
- Record
CVE-2023-26150- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
OSV
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. Note: This issue is a result of missing checks for services that require an active session.
- Record
CVE-2023-26150- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVGHSA-2894-qcqf-g23g
asyncua Improper Authentication vulnerability
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication.
Note:
This issue is a result of missing checks for services that require an active session.
- Record
GHSA-2894-qcqf-g23g- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVPYSEC-2023-189
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. Note: This issue is a result of missing checks for services that require an active session.
- Record
PYSEC-2023-189- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-26150
Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication. Note: This issue is a result of missing checks for services that require an active session.
- Record
UBUNTU-CVE-2023-26150- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
asyncuaPyPI |
before 0.9.96 | 0.9.96 |
asyncuaPyPI |
before 0.9.96, plus listed versions 0.5.00.5.10.6.00.6.10.8.0 Show 21 moreShow less0.8.10.8.20.8.30.8.40.9.00.9.10.9.100.9.110.9.120.9.140.9.20.9.30.9.60.9.80.9.90.9.900.9.910.9.920.9.930.9.940.9.95 |
0.9.96 |
asyncuaPyPI |
before 0.9.96, plus listed versions 0.5.00.5.10.6.00.6.10.8.0 Show 45 moreShow less0.8.10.8.20.8.30.8.40.9.00.9.10.9.100.9.110.9.120.9.140.9.20.9.30.9.60.9.80.9.90.9.900.9.910.9.920.9.930.9.940.9.95v0.9.95v0.9.94v0.9.93v0.9.92v0.9.91v0.9.90v0.9.12v0.9.11v0.9.10v0.9.80.9.70.9.40.90.40.90.30.90.20.90.10.90.00.10.170.10.150.10.140.10.120.10.110.10.90.10.8 |
0.9.96 |
python-opcuaUbuntu:18.04:LTS |
All versions, plus listed versions 0.90.3-1 |
None known |
python-opcuaUbuntu:20.04:LTS |
All versions, plus listed versions 0.98.6-30.98.6-3ubuntu10.98.9-1 |
None known |
python-opcuaUbuntu:22.04:LTS |
All versions, plus listed versions 0.98.11-10.98.11-1ubuntu1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-26150 is a medium vulnerability (CVSS 6.5) in Freeopcua Opcua-asyncio, published October 3, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. Fixed in asyncua 0.9.96.
References
security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435
gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121
github.com/FreeOpcUa/opcua-asyncio/issues/1014
Show 8 moreShow less
nvd.nist.gov/vuln/detail/CVE-2023-26150
ubuntu.com/security/CVE-2023-26150
cve.org/CVERecord?id=CVE-2023-26150
Left out here: 14 versions. The JSON record has them.