dfactory Responsive Lightbox & Gallery Plugin up to 2.7.9 on WordPress Comments comment cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in dfactory Responsive Lightbox & Gallery Plugin up to 2.7.9. This affects an unknown part of the component Comments. Performing a manipulation of the argument Comment results in cross site scripting. This vulnerability is identified as CVE-2026-103897. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in dfactory Responsive Lightbox & Gallery Plugin up to 2.7.9. It has been classified as problematic. This affects some unknown processing of the component Comments. The manipulation of the argument comment 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 Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 2.7.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the plugin's 'Comments' lightbox setting to be enabled (disabled by default), a moderator to approve the injected comment, and a site visitor to click the affected image to open the lightbox.

The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-103897 since 10/01/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 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

• dfactory

Name

• Responsive Lightbox & Gallery Plugin

Version

• 2.7.0
• 2.7.1
• 2.7.2
• 2.7.3
• 2.7.4
• 2.7.5
• 2.7.6
• 2.7.7
• 2.7.8
• 2.7.9

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

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

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