Upsonic up to 0.55.6 markdown/server.py os.path.join file.filename path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Upsonic up to 0.55.6 and classified as critical. This affects the function os.path.join of the file markdown/server.py. Executing a manipulation of the argument file.filename can lead to path traversal. This vulnerability is tracked as CVE-2025-6278. Moreover, an exploit is present.

Detailsinfo

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 with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability was named CVE-2025-6278. The exploitation appears to be easy. Technical details and also a public exploit are known. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-18698). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/19/2025 Advisory disclosed
06/19/2025 +0 days VulDB entry created
06/24/2025 +5 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 356
Status: Not defined

CVE: CVE-2025-6278 (🔒)
GCVE (CVE): GCVE-0-2025-6278
GCVE (VulDB): GCVE-100-313282
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/19/2025 08:58
Updated: 06/24/2025 06:12
Changes: 06/19/2025 08:58 (56), 06/20/2025 00:15 (1), 06/20/2025 00:32 (30), 06/24/2025 06:12 (1)
Complete: 🔍
Cache ID: 216:055:103

Submitinfo

Accepted

  • Submit #593096: Upsonic <=v0.55.6 Path Traversal: '..\filedir' (by github.com)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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