Investi Plugin up to 1.0.26 on WordPress Shortcode esc_attr maximum-num-years cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Investi Plugin up to 1.0.26 on WordPress. This vulnerability affects the function esc_attr of the component Shortcode Handler. Performing a manipulation of the argument maximum-num-years results in cross site scripting. This vulnerability is reported as CVE-2026-3600. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Investi Plugin up to 1.0.26 on WordPress. This affects the function esc_attr of the component Shortcode Handler. The manipulation of the argument maximum-num-years with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

The Investi plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'investi-announcements-accordion' shortcode's 'maximum-num-years' attribute in all versions up to, and including, 1.0.26. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, the 'maximum-num-years' attribute value is read directly from shortcode attributes and interpolated into a double-quoted HTML attribute without any escaping (no esc_attr(), htmlspecialchars(), or similar). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The weakness was disclosed by Gilang Asra Bilhadi. It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-3600 since 03/05/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 1.0.22 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Name

• Investi Plugin

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18
• 1.0.19
• 1.0.20
• 1.0.21
• 1.0.22
• 1.0.23
• 1.0.24
• 1.0.25
• 1.0.26

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CPE 2.2info

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