Acyba AcyMailing Plugin up to 11.0.4 on WordPress user[name] path traversal

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Acyba AcyMailing Plugin up to 11.0.4. This affects an unknown part. The manipulation of the argument user[name] leads to path traversal. This vulnerability is referenced as CVE-2026-77807. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Acyba AcyMailing Plugin up to 11.0.4 and classified as problematic. This issue affects an unknown functionality. The manipulation of the argument user[name] with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality. The summary by CVE is:

The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 11.0.4 via the `user[name]` Parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Exploitation requires "Embed images" option in AcyMailing configuration being enabled.

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-77807 since 08/21/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/11/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Acyba

Name

• AcyMailing Plugin

Version

• 11.0.0
• 11.0.1
• 11.0.2
• 11.0.3
• 11.0.4

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion