nvd.nist.gov – Archer Community

Archer Update for Multiple Vulnerabilities

Archer Identifier

SA-20

CVE Identifier

CVE-2026-25831, CVE-2026-25830, CVE-2026-23784

Severity

Medium

Severity Rating

Individual CVE scores noted below.

Affected Products

Archer Platform versions greater than 6

Summary

Archer Platform contains fixes for multiple security vulnerabilities that could potentially be exploited by malicious users to compromise the affected system.

Details

Archer Platform has been updated for the following vulnerabilities:

Broken Authentication Vulnerability – CVE-2026-25831

Archer Platform 6 before version 2025.08 is affected by a broken authentication vulnerability. Authentication was mishandled because logout did not terminate an existing session under certain conditions. 2025.12 is also a fixed release.

CVSSv3.1 Base Score: 6.5 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N)

Stored Cross-site Scripting Vulnerability – CVE-2026-25830

A stored XSS was discovered in Archer Platform 6 before version 2025.08. A remote authenticated malicious Archer user could potentially exploit this to store malicious HTML or JavaScript code in a trusted application data store. When victim users access the data store through their browsers, the malicious code gets executed by the web browser in the context of the vulnerable application. 2025.12 is also a fixed release.

CVSSv3.1 Base Score: 5.4 (AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N)

Broken Authorization Vulnerability – CVE-2026-23784

Archer Platform 6 before version 2026.02 is affected by a broken authorization vulnerability. Authorization was mishandled in certain operations preventing proper permission updates. 2025.12 is also a fixed release.

CVSSv3.1 Base Score: 4.2 (AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N)

For more information about any of the Common Vulnerabilities and Exposures (CVEs) mentioned here, consult the National Vulnerability Database (NVD) at http://nvd.nist.gov/home.cfm. To search for a particular CVE, use the database’s search utility at http://web.nvd.nist.gov/view/vuln/search.

Resolution

For CVE-2026-25831, the following Archer releases contain a resolution to this vulnerability:

Archer version 2025.08 or higher
Archer version 2025.12 or higher

For CVE-2026-25830, the following Archer releases contain a resolution to this vulnerability:

Archer version 2025.08 or higher
Archer version 2025.12 or higher

For CVE-2026-23784, the following Archer releases contain a resolution to this vulnerability:

Archer version 2026.02 or higher
Archer version 2025.12 or higher

Archer recommends all customers upgrade at the earliest opportunity.

EOPS Policy

Archer has a defined End of Primary Support policy associated with all major versions. Please refer to the Product Version Life Cycle for additional details.

Severity Rating

For an explanation of Severity Ratings, refer to the Archer Vulnerability Disclosure Policy. Archer recommends all customers consider both the base score and any relevant temporal and environmental scores which may impact the potential severity associated with particular security vulnerability.

Legal Information

Read and use the information in this Archer Security Advisory to assist in avoiding any situation that might arise from the problems described herein. If you have any questions regarding this advisory, contact Archer Customer Support. Archer distributes Archer Security Advisories in order to bring to the attention of users of the affected Archer products, important security information.

Archer recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. Archer disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement.

In no event shall Archer, its affiliates or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Archer, its affiliates or its suppliers have been advised of the possibility of such damages. Some jurisdictions do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.

Please see content here.

Originally posted on February 26, 2026 in the Archer Community.