CVE-2023-26150 json
asyncua Improper Authentication vulnerability
published 2023-10-03 3 y ago modified 2026-06-17 4 mo ago also GHSA-2894-qcqf-g23g , PYSEC-2023-189 , EUVD-2023-0047
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi asyncua 0.9.96
- n/a asyncua 0.9.96
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- security.snyk.io https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435 referenced PoC, tagged "exploit" by a source, unverified
- gist.github.com https://gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121 referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/FreeOpcUa/opcua-asyncio/issues/1014 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | asyncua | <0.9.96 |
0.9.96 |
Affected products
- n/a asyncua
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/FreeOpcUa/opcua-asyncio/pull/1015
web, patch
-
github.com
/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb7147844a
web, patch
-
github.com
/FreeOpcUa/opcua-asyncio/commit/b4106dfd5037423c9d1810b48a97296b59cde513
web, patch
-
security.snyk.io
/vuln/SNYK-PYTHON-ASYNCUA-5673435
web, exploit, patch, third-party-advisory, evidence
-
gist.github.com
/artfire52/84f7279a4119d6f90381ac49d7121121
web, exploit, third-party-advisory, evidence
-
github.com
/FreeOpcUa/opcua-asyncio/issues/1014
web, exploit, issue-tracking, third-party-advisory, evidence, report
-
github.com
/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2023-26150
advisory
-
github.com
/FreeOpcUa/opcua-asyncio
package
-
github.com
/pypa/advisory-database/tree/main/vulns/asyncua/PYSEC-2023-189.yaml
web
-
github.com
/advisories/GHSA-2894-qcqf-g23g
advisory
Sources
- CVE List CVE-2023-26150
- GitHub Advisory GHSA-2894-qcqf-g23g
- NVD CVE-2023-26150
- OSV PYSEC-2023-189
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.