CVE-2026-103897
Responsive Lightbox & Gallery <= 2.7.9 - Authenticated (Editor+) Stored Cross-Site Scripting via Comment Content 'title' Attribute
Description
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.
INFO
Published Date :
Oct. 10, 2026, 7:16 a.m.
Last Modified :
Oct. 10, 2026, 7:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Responsive Lightbox & Gallery plugin to version 2.7.10 or later.
- Disable the 'Comments' lightbox setting if updating is not possible.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-103897.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-103897 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-103897
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-103897 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-103897 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Oct. 10, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/103xxx/CVE-2026-103897.json">CVE-2026-103897</a> Added Reference https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/assets/glightbox/glightbox.js#L1489 Added Reference https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-frontend.php#L1981 Added Reference https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-frontend.php#L409 Added Reference https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-frontend.php#L410 Added Reference https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-frontend.php#L488 Added Reference https://plugins.trac.wordpress.org/changeset/3694843/responsive-lightbox/trunk/includes/class-frontend.php Added Reference https://plugins.trac.wordpress.org/changeset/3729072 Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/5bb2a893-d254-42bc-8b50-2a88306dbbd7?source=cve