Vulnerability · Published Jun 19, 2025 · Assigned by VulDB
CVE-2025-6278Upsonic server.py os.path.join path traversal
Medium 5.5
In plain English
A medium-severity path traversal in Upsonic. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.7%top 46.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | upsonic | 0.56.0 | GHSA-8jf4-fcjr-68c2 |
| PyPI | upsonic | 0.56.0 | PYSEC-2025-67 |
Affected products (as reported)
Weakness: CWE-22 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-313282 | Upsonic server.py os.path.join path traversal vdb-entry, technical-description
- VDB-313282 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #593096 | Upsonic <=v0.55.6 Path Traversal: '..\filedir' third-party-advisory
- https://github.com/Upsonic/Upsonic/issues/356 exploit, issue-tracking