What’s Vulnerable › Vulnerabilities

CVE-2026-53992: Reflected XSS in ProjectSend thumbnails-regenerate.php via start_date / end_date Parameters

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-05 · updated 2026-09-24
• Weakness: CWE-79

Description

ProjectSend r2029 contains a reflected cross-site scripting vulnerability in thumbnails-regenerate.php that allows remote attackers to inject arbitrary HTML and JavaScript by supplying unsanitized values in the start_date and end_date GET parameters, which are echoed unescaped into HTML attribute values. Attackers can craft a malicious URL that, when followed by an authenticated victim with edit_settings permissions, executes injected scripts in the application origin to steal session cookies or perform unauthorized actions including user management, file management, and application settings changes.

Affected products

• ProjectSend: through b4ad95b

References

• https://github.com/projectsend/projectsend
• https://github.com/projectsend/projectsend/commit/b4ad95b1bd3d18b23261b7c3496bfbac8ebfe324
• https://www.vulncheck.com/advisories/reflected-xss-in-projectsend-thumbnails-regenerate-php-via-start-date-end-date-parameters

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