CVE-2026-5340: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in gopi_plus Fancy Image Show
The Fancy Image Show WordPress plugin up to version 9.1 contains a stored cross-site scripting (XSS) vulnerability via its 'fancy-img-show' shortcode. Authenticated users with contributor-level access or higher can inject malicious scripts due to insufficient input sanitization and output escaping. These scripts execute when any user views the affected page. The vulnerability has a CVSS score of 6.4, indicating medium severity. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-5340 is a stored cross-site scripting vulnerability in the Fancy Image Show WordPress plugin (versions up to 9.1). It arises from improper neutralization of input during web page generation, specifically in the 'fancy-img-show' shortcode. Authenticated users with contributor or higher privileges can inject arbitrary JavaScript that executes in the context of users viewing the affected pages. This vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N). No patch or official remediation has been published by the vendor as of the data available.
Potential Impact
Successful exploitation allows authenticated contributors or higher to inject persistent malicious scripts into pages, potentially leading to partial confidentiality and integrity loss (e.g., theft of user session data or manipulation of page content). There is no impact on availability. The vulnerability affects all users who view the compromised pages, exposing them to the injected scripts.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the Fancy Image Show plugin if possible. Monitor for plugin updates and apply them promptly once a fix is released.
CVE-2026-5340: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in gopi_plus Fancy Image Show
Description
The Fancy Image Show WordPress plugin up to version 9.1 contains a stored cross-site scripting (XSS) vulnerability via its 'fancy-img-show' shortcode. Authenticated users with contributor-level access or higher can inject malicious scripts due to insufficient input sanitization and output escaping. These scripts execute when any user views the affected page. The vulnerability has a CVSS score of 6.4, indicating medium severity. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 6.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5340 is a stored cross-site scripting vulnerability in the Fancy Image Show WordPress plugin (versions up to 9.1). It arises from improper neutralization of input during web page generation, specifically in the 'fancy-img-show' shortcode. Authenticated users with contributor or higher privileges can inject arbitrary JavaScript that executes in the context of users viewing the affected pages. This vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N). No patch or official remediation has been published by the vendor as of the data available.
Potential Impact
Successful exploitation allows authenticated contributors or higher to inject persistent malicious scripts into pages, potentially leading to partial confidentiality and integrity loss (e.g., theft of user session data or manipulation of page content). There is no impact on availability. The vulnerability affects all users who view the compromised pages, exposing them to the injected scripts.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the Fancy Image Show plugin if possible. Monitor for plugin updates and apply them promptly once a fix is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-01T14:16:23.792Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a02e308cbff5d8610bad08b
Added to database: 05/12/2026, 08:21:28 UTC
Last enriched: 05/19/2026, 11:06:11 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 43
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