CVE-2025-6278

low-risk
Published 2025-06-19

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.

Do I need to act?

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0.22% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
ADJACENT_NETWORK / LOW complexity

Affected Products (1)

Upsonic

Affected Vendors

Upsonic

References (5)

Exploit https://github.com/Upsonic/Upsonic/issues/356
Permissions Required https://vuldb.com/?ctiid.313282
Third Party Advisory https://vuldb.com/?id.313282
Third Party Advisory https://vuldb.com/?submit.593096
Exploit https://github.com/Upsonic/Upsonic/issues/356
24
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal