HIGHCVSS v3.1 8.8Vulnerability
CVE-2026-123621
Usermin through 2.570 contains a path traversal vulnerability in mailbox/detachall.cgi that allows remote unauthenticated attackers to write files outside the temporary directory via unsanitized attachment filenames. Attackers can email attachments with ../ sequences in filenames, and when the recipient downloads all attachments, files like ~/.forward are overwritten, enabling command execution.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-07T06:40:34.987550+00:00
- Cvss severity
- HIGH
- Cvss score
- 8.8
- Retrieved at
- 2026-11-07T06:41:39+00:00
- Score
- 8.8
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-123621
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-11-06T18:25:35+00:00
- Name
- CVE-2026-123621
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published at
- 2026-11-06T15:17:19.730
- Last modified
- 2026-11-06T18:18:04.240
Related Entities (1)
HAS_WEAKNESS (1)
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