# CVE-2023-26151: asyncua vulnerable to denial of service via infinite loop

Source: https://junglewise.ai/threats/cve-2023-26151-asyncua-vulnerable-to-denial-of-service-via-infinite-loop  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-10-03  
License: CC BY 4.0 with a link back

CVE-2023-26151 · Severity: low · CVSS 3.1 · Published 2023-10-03

Versions of the package asyncua before 0.9.96 are vulnerable to Denial of Service (DoS) such that an attacker can send a malformed packet and as a result, the server will enter into an infinite loop and consume excessive memory.

Technologies: [asyncua (PyPI)](https://junglewise.ai/threats/technologies/asyncua). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2023-26151 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-26151 being exploited in the wild.

**How severe is CVE-2023-26151?** Low severity, with a CVSS score of 3.1, published 3 October 2023.

**Which products and versions are affected?** asyncua (PyPI) ECOSYSTEM:introduced=0,fixed=0.9.96, GIT:introduced=0,fixed=f6603daa34a93a658f0e176cb0b9ee5a6643b262|ECOSYSTEM:introduced=0,fixed=0.9.96.

**Is there a fix for CVE-2023-26151?** Yes. asyncua (PyPI): upgrade to 0.9.96 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-26151?** Check whether you run asyncua (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- asyncua (PyPI): upgrade to 0.9.96 or later

  ```sh
  pip install "asyncua>=0.9.96"
  ```


## Affected products

- asyncua (PyPI) ECOSYSTEM:introduced=0,fixed=0.9.96, GIT:introduced=0,fixed=f6603daa34a93a658f0e176cb0b9ee5a6643b262|ECOSYSTEM:introduced=0,fixed=0.9.96

## Identifiers

- CVE-2023-26151
- GHSA-gfvq-mxw3-mfq3
- PYSEC-2023-190

## Related threats

- [PYSEC-2026-888 - Uncontrolled Resource Consumption in asyncua and opcua](https://junglewise.ai/threats/cve-2022-25304-uncontrolled-resource-consumption-in-asyncua-and-opcua)
- [asyncua improper authentication in Address Space access](https://junglewise.ai/threats/cve-2023-26150-asyncua-improper-authentication-in-address-space-access)