# CVE-2026-105133: AhsayCBS - Authentication Bypass

> Live exploitation tracking for CVE-2026-105133 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2026-105133

## Key facts

- **Exploitation phase:** Insufficient Data. Not enough CrowdSec telemetry data is available to confidently assess how this vulnerability is exploited in the wild.
- **CVSS score:** 6.9
- **Public exploit available:** Yes
- **Affected products:** AhsayCBS
- **Weaknesses:** CWE-287 (Improper Authentication)
- **Tags:** enterprise_software

## Description

A vulnerability was detected in Ahsay AhsayCBS up to 10.3.2. This affects the function checkSysPwd of the file com/ahsay/obs/api/ApiStructsAction.java of the component API. Performing a manipulation of the argument random results in improper authentication. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 10.3.4 is able to mitigate this issue. It is recommended to upgrade the affected component.

## CrowdSec analysis

[CVE-2026-105133](https://euvd.enisa.europa.eu/vulnerability/CVE-2026-105133) is an authentication bypass vulnerability in AhsayCBS versions up to 10.3.2, caused by improper handling of the `random` argument in the API’s `checkSysPwd` function. Remote unauthenticated attackers may exploit this flaw to bypass authentication and access or affect protected functionality; a public exploit is available, and upgrading to version 10.3.4 mitigates the issue.

CrowdSec has been tracking this vulnerability and its exploits since 22nd of October 2026.

Data from the CrowdSec community indicates that exploitation of CVE-2026-105133 is highly selective and intelligence-driven. Threat actors use advanced reconnaissance and carefully choose their targets, often as part of sophisticated campaigns or advanced persistent threat operations.
Data from the CrowdSec community also indicates a gradual decrease in attacks targeting CVE-2026-105133. While still present in the wild, exploitation levels have dropped noticeably week-over-week. This may signal that the vulnerability is becoming less relevant or that defenses are improving fast enough for attackers to lose interest.

Observed exploitation attempts target `POST /obs/api/json/ListSystemUsers.do` with a crafted JSON body containing `"FromServlet":"Y"`. This parameter manipulation may bypass authentication and expose system-user data.

## Timeline

- 2026-10-04: CVE Published. CVE-2026-105133 is published to NVD.
- 2026-10-14: CISA KEV. CVE-2026-105133 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2026-10-17: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).
- 2026-10-22: Rule Released. CrowdSec releases a rule to detect CVE-2026-105133 exploitation attempts against the CrowdSec Network.
- 2026-10-28: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2026-105133 for the first time.

## References

- https://www.ahsay.com/en/support/help-centre/release-notes/cbs/v10.3.4
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-105133.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2026-105133) follows observed exploitation activity for CVE-2026-105133. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.