CVE-2025-6278 Details
Description
A vulnerability classified as critical was found in Upsonic up to 0.55.6. This vulnerability affects the function os.path.join of the file markdown/server.py. The manipulation of the argument file.filename leads to path traversal. The exploit has been disclosed to the public and may be used.
A critical path traversal vulnerability has been identified in Upsonic versions through 0.55.6. The issue arises in the file upload function within 'markdown/server.py', specifically at line 39, where the 'os.path.join' function is used to concatenate the temporary directory path with the filename of the uploaded file. This implementation fails to properly sanitize the filename, allowing attackers to manipulate the file path and potentially write arbitrary files to the server.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 23, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Upsonic/Upsonic/issues/356 | CISA-ADP | Exploit |
| https://github.com/Upsonic/Upsonic/issues/356 | [email protected] | Exploit |
| https://vuldb.com/?ctiid.313282 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.313282 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.593096 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| upsonic upsonic | <= 0.55.6 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Jul 8, 2025 | Initial Analysis | [email protected] |
| Jun 23, 2025 | CVE Modified | CISA-ADP |
| Jun 19, 2025 | New CVE Received | [email protected] |