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Vulnerability record · CVE-2021-40887 · published 11 October 2021

CVE-2021-40887: Projectsend path traversal vulnerability

Projectsend · Projectsend

Projectsend version r1295 is affected by a directory traversal vulnerability. Because of lacking sanitization input for files[] parameter, an attacker can add ../ to move all PHP files or any file on the system that has permissions to /upload/files/ folder.

9.8 CVSS 3.1 Critical EPSS 2.4% · top 16.9% CWE-22 · Path traversal
9.8CVSS 3.1 base score, v2 10.0
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Projectsend version r1295 is affected by a directory traversal vulnerability. Because of lacking sanitization input for files[] parameter, an attacker can add ../ to move all PHP files or any file on the system that has permissions to /upload/files/ folder.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/projectsend/projectsend/issues/994 ExploitThird Party Advisory
https://github.com/projectsend/projectsend/issues/994 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-11680ProjectSend improper authentication allows unauthenticated config changesProjectSend versions prior to r1720 expose options.php without authentication, letting remote attackers modify application configuration. Because con…KEVEPSS 92%analysed9.8CVE-2016-10732Projectsend improper authentication vulnerabilityProjectSend (formerly cFTP) r582 allows authentication bypass via a direct request for users.php, home.php, edit-file.php?file_id=1, or process-zip-d…EPSS 1.9%9.8CVE-2016-10733Projectsend path traversal vulnerabilityProjectSend (formerly cFTP) r582 allows directory traversal via file=../ in the process-zip-download.php query string.EPSS 2.1%9.8CVE-2016-10734Projectsend improper authorization vulnerabilityProjectSend (formerly cFTP) r582 allows Insecure Direct Object Reference via includes/actions.log.export.php.EPSS 1.5%9.8CVE-2016-10731Projectsend sql injection vulnerabilityProjectSend (formerly cFTP) r582 allows SQL injection via manage-files.php with the request parameter status, manage-files.php with the request param…EPSS 1.4%9.8CVE-2017-9741Projectsend improper input validation vulnerabilityinstall/make-config.php in ProjectSend r754 allows remote attackers to execute arbitrary PHP code via the dbprefix parameter, related to replacing TA…EPSS 1.6%8.8CVE-2018-7201Projectsend csv injection vulnerabilityCSV Injection was discovered in ProjectSend before r1053, affecting victims who import the data into Microsoft Excel.EPSS 1.3%8.8CVE-2019-11378Projectsend path traversal vulnerabilityAn issue was discovered in ProjectSend r1053. upload-process-form.php allows finished_files[]=../ directory traversal. It is possible for users to re…EPSS 3.6%

Source: NIST National Vulnerability Database (record CVE-2021-40887), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.