Path traversal
A supplied file path escapes the directory the application intended to allow.
CWE-22 · CISA KEV
Reading and practice labs · Free account for labs. Basic HTTP knowledge; some labs use Burp Suite.
Exploited. On CISA's list since 2022-08-25, and used by ransomware.
dotCMS Unrestricted Upload of File Vulnerability
CVE-2022-26352 · dotCMS dotCMS · Published 2022-07-17
How bad would it be?
9.8 out of 10
CVSS rates it critical: about as damaging as flaws get.
How likely is it to be used?
91%
Estimated chance of exploitation in the next 30 days, among the top 1% of all scored flaws (EPSS, 2026-10-29).
Is it already being used?
Yes
CISA has seen it exploited in real attacks. For US government agencies the fix is deadline passed 1506 days ago (2022-09-15).
What CISA says to do
Apply updates per vendor instructions.
dotCMS ContentResource API contains an unrestricted upload of file with a dangerous type vulnerability that allows for directory traversal, in which the file is saved outside of the intended storage location. Exploitation allows for remote code execution.
What the flaw is
An issue was discovered in the ContentResource API in dotCMS 3.0 through 22.02. Attackers can craft a multipart form request to post a file whose filename is not initially sanitized. This allows directory traversal, in which the file is saved outside of the intended storage location. If anonymous content creation is enabled, this allows an unauthenticated attacker to upload an executable file, such as a .jsp file, that can lead to remote code execution.
From the NVD.
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CWE-138 · CISA KEV. We have not selected a close learning match for this label.
CWE is a catalogue of weakness types. Labels come from the sources shown and can differ or change. Resource matches reviewed 16 October 2026.
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Exploited flaws from CISA's KEV catalogue. Chance of exploitation from EPSS by FIRST. Descriptions and scores from the NVD. This product uses the NVD API but is not endorsed or certified by the NVD.