CVE-2025-6279

Upsonic Pickle add_tool cloudpickle.loads deserialization

State: Published
Severity: 5.1 Medium
Published: Jun 19, 2025
Updated: Jun 23, 2025
Reserved: Jun 19, 2025

Description

A vulnerability, which was classified as critical, has been found in Upsonic up to 0.55.6. This issue affects the function cloudpickle.loads of the file /tools/add_tool of the component Pickle Handler. The manipulation leads to deserialization. The exploit has been disclosed to the public and may be used.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	5.5 Medium	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	VulDB
3.0	5.5 Medium	CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
2.0	5.2 Medium	AV:A/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-502 Deserialization
CWE-20 Improper Input Validation

Affected Products

Product	Versions
Upsonicn/a	0.55.0Affected 0.55.1Affected 0.55.2Affected 0.55.3Affected 0.55.4Affected 0.55.5Affected 0.55.6Affected

References

VDB-313283 | Upsonic Pickle add_tool cloudpickle.loads deserializationvdb-entrytechnical-description
VDB-313283 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #593099 | Upsonic <=v0.55.6 Deserializationthird-party-advisory
https://github.com/Upsonic/Upsonic/issues/353exploitissue-tracking

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