XenForo before 2.3.13 contains a path traversal vulnerability in the style archive importer on Windows deployments that allows authenticated non-super administrators with style permissions to write arbitrary files outside the intended extraction directory by using backslash-based traversal sequences in ZIP member names. Attackers can craft a malicious ZIP archive with backslash path separators that bypass forward-slash validation to write arbitrary bytes to any web-server-writable path, including the public web root, achieving persistent code execution as the web-server account.
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History
Wed, 09 Sep 2026 01:15:00 +0000
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Tue, 08 Sep 2026 15:30:00 +0000
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ssvc
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Tue, 08 Sep 2026 15:00:00 +0000
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Xenforo
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Xenforo
Xenforo xenforo |
Tue, 08 Sep 2026 13:30:00 +0000
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| Description | XenForo before 2.3.13 contains a path traversal vulnerability in the style archive importer on Windows deployments that allows authenticated non-super administrators with style permissions to write arbitrary files outside the intended extraction directory by using backslash-based traversal sequences in ZIP member names. Attackers can craft a malicious ZIP archive with backslash path separators that bypass forward-slash validation to write arbitrary bytes to any web-server-writable path, including the public web root, achieving persistent code execution as the web-server account. | |
| Title | XenForo < 2.3.13 Path Traversal via Style Archive Importer on Windows | |
| Weaknesses | CWE-22 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-08T13:20:34.768Z
Updated: 2026-09-09T01:13:23.729Z
Reserved: 2026-08-14T18:01:19.917Z
Link: CVE-2026-74239
Updated: 2026-09-08T14:00:56.785Z
Status : Awaiting Analysis
Published: 2026-09-08T14:17:26.750
Modified: 2026-09-09T01:16:58.890
Link: CVE-2026-74239
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