CVE-2026-43975

Name: CVE-2026-43975
Creator: NVD / NIST
Published: 2026-05-06T10:16:26.163+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.73%

Last modified Jun 17, 2026

CVE-2026-43975 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. FolderUploadsFileManager in Apache Wicket does not validate or sanitize the uploadFieldId parameter or the clientFileName before constructing file paths, allowing an unauthenticated attacker to write arbitrary files outside the intended upload directory or read files from arbitrary locations on the server. This issue affects Apache Wicket: from 8.0.0 through 8.17.0, from 9.0.0 through 9.22.0, from 10.0.0 through 10.8.0. Users are recommended to upgrade to version 10.9.0, which fixes the issue.. EPSS estimates a 0.73% chance of exploitation in the next 30 days.

Description

FolderUploadsFileManager in Apache Wicket does not validate or sanitize the uploadFieldId parameter or the clientFileName before constructing file paths, allowing an unauthenticated attacker to write arbitrary files outside the intended upload directory or read files from arbitrary locations on the server. This issue affects Apache Wicket: from 8.0.0 through 8.17.0, from 9.0.0 through 9.22.0, from 10.0.0 through 10.8.0. Users are recommended to upgrade to version 10.9.0, which fixes the issue.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.73%

49.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Apache	Wicket	>= 8.0.0, <= 8.17.0
Apache	Wicket	>= 9.0.0, <= 9.22.0
Apache	Wicket	>= 10.0.0, < 10.9.0

References

https://github.com/apache/wicket/pull/1432Issue Tracking, Patch
https://lists.apache.org/thread/xp2jrdk6ppv1zcmxb4w1mk2lg1dw3hbrVendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/06/4Mailing List, Third Party Advisory

Timeline

Published: May 6, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-43975?

How severe is CVE-2026-43975?

CVE-2026-43975 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.

How do I fix CVE-2026-43975?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-43975?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST