reputeinfosystems ARMember Plugin up to 4.0.27 on WordPress File Upload /uploads/armember X-FILENAME path traversal

Summaryinfo

A vulnerability, which was classified as critical, was found in reputeinfosystems ARMember Plugin up to 4.0.27. Affected by this issue is some unknown functionality of the file /uploads/armember of the component File Upload Handler. The manipulation of the argument X-FILENAME results in path traversal. This vulnerability is known as CVE-2026-15302. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in reputeinfosystems ARMember Plugin up to 4.0.27. Affected is some unknown functionality of the file /uploads/armember of the component File Upload Handler. The manipulation of the argument X-FILENAME with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The ARMember plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 4.0.27 via the 'X-FILENAME' HTTP header. This makes it possible for unauthenticated attackers to upload and overwrite certain files (e.g., CSS) to directories outside the 'wp-content/uploads/armember' directory.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-15302 since 07/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/10/2026). The MITRE ATT&CK project declares the attack technique as T1006.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• reputeinfosystems

Name

• ARMember Plugin

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 4.0.15
• 4.0.16
• 4.0.17
• 4.0.18
• 4.0.19
• 4.0.20
• 4.0.21
• 4.0.22
• 4.0.23
• 4.0.24
• 4.0.25
• 4.0.26
• 4.0.27

CPE 2.3info

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CPE 2.2info

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