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Vulnerability record · CVE-2026-105133 · published 4 October 2026

CVE-2026-105133: Ahsay cloud backup suite improper authentication vulnerability

Ahsay · Cloud Backup Suite

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.

5.5 CVSS 4.0 Medium CISA KEV since 14 Oct 2026 EPSS 0.67% · top 49.2% CWE-287 · Improper authentication
5.5CVSS 4.0 base score, v2 7.5
0.67%EPSS exploitation probability, 30 days
YesIn CISA KEV, fix deadline passed
1Affected product versions listed by NVD
6References
15 Oct 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Exploitation in the wild

CISA added CVE-2026-105133 to the Known Exploited Vulnerabilities catalog on 14 October 2026 as "Ahsay AhsayCBS Improper Authentication Vulnerability". Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. Federal deadline 17 October 2026.

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://vuldb.com/cve/CVE-2026-105133 Third Party AdvisoryVDB Entry
https://vuldb.com/submit/942688 Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/413350 Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/413350/cti Permissions RequiredVDB Entry
https://www.ahsay.com/en/support/help-centre/release-notes/cbs/v10.3.4 Release Notes
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-105133 US Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2026-105134Ahsay cloud backup suite command injection vulnerabilityA flaw has been found in Ahsay AhsayCBS up to 10.3.2. This vulnerability affects unknown code of the file /rps/api/json/UpdateReceivers.do of the com…KEVEPSS 3.2%8.8CVE-2020-5846Ahsay cloud backup suite unrestricted file upload vulnerabilityAn insecure file upload and code execution issue was discovered in Ahsay Cloud Backup Suite 8.3.0.30 via a "PUT /obs/obm7/file/upload" request with t…EPSS 1.4%8.8CVE-2019-10267Ahsay Cloud Backup Suite unrestricted file upload leads to code executionAhsay Cloud Backup Suite 8.1.0.50 allows an authenticated user to upload a file into any directory on the server. Because uploaded JSP files are exec…EPSS 75%analysed7.5CVE-2019-10265Ahsay cloud backup suite path traversal vulnerabilityAn issue was discovered in Ahsay Cloud Backup Suite before 8.1.1.50. On the /cbs/system/ShowAdvanced.do "File Explorer" screen, it is possible to cha…EPSS 2.5%7.5CVE-2019-10266Ahsay cloud backup suite xml external entity (xxe) vulnerabilityAn issue was discovered in Ahsay Cloud Backup Suite before 8.1.1.50. When sending an out-of-bounds XML document to a URL, it is possible to read the …EPSS 13%7.2CVE-2022-37027Ahsay cloud backup suite argument injection vulnerabilityAhsay AhsayCBS 9.1.4.0 allows an authenticated system user to inject arbitrary Java JVM options. Administrators that can modify the Runtime Options i…EPSS 22%7.2CVE-2019-10264Ahsay cloud backup suite xml external entity (xxe) vulnerabilityAn issue was discovered in Ahsay Cloud Backup Suite before 8.1.1.50. With a valid administrator account, the "Move / Import / Export Users" screen ha…EPSS 1.3%6.1CVE-2019-10263Ahsay cloud backup suite cross-site scripting vulnerabilityAn issue was discovered in Ahsay Cloud Backup Suite before 8.1.1.50. When creating a trial account, it is possible to inject XSS in the Alias field, …EPSS 0.83%

Source: NIST National Vulnerability Database (record CVE-2026-105133), CISA KEV, FIRST EPSS (scores of 2026-10-15). This page is refreshed as NVD updates the record.