medium5.5
CVE-2025-6278
Upsonic is vulnerable to Path Traversal attack through its os.path.join function
Impact
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
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | upsonic | < 0.56.0 | 0.56.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Upsonic | Upsonic | through 0.55.6 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/Upsonic/Upsonic/issues/356
- https://vuldb.com/?ctiid.313282
- https://vuldb.com/?id.313282
- https://vuldb.com/?submit.593096
- https://github.com/advisories/GHSA-8jf4-fcjr-68c2
- https://nvd.nist.gov/vuln/detail/CVE-2025-6278
- https://github.com/Upsonic/Upsonic/pull/360
- https://github.com/Upsonic/Upsonic/commit/a54529acc6e4bfe28f4f5c80c058144348a306b7
- https://github.com/Upsonic/Upsonic/blob/v0.55.6/src/upsonic/server/markdown/server/server.py#L39
- https://github.com/pypa/advisory-database/tree/main/vulns/upsonic/PYSEC-2025-67.yaml