CVE-2026-3954
CVE-2026-3954 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 6.4
- CVSS v4: 5.5
- EPSS exploit prediction: 0% (38th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-11348
- Weakness: CWE-22
- Published:
- Last modified:
Description
A weakness has been identified in OpenBMB XAgent 1.0.0. Affected by this vulnerability is the function workspace of the file XAgentServer/application/routers/workspace.py. This manipulation of the argument file_name causes path traversal. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Frequently asked questions
- What is CVE-2026-3954?
- A weakness has been identified in OpenBMB XAgent 1.0.0. Affected by this vulnerability is the function workspace of the file XAgentServer/application/routers/workspace.py. This manipulation of the argument file_name causes path traversal. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
- How severe is CVE-2026-3954?
- CVE-2026-3954 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
- Is CVE-2026-3954 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-3954?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-3954 have an EU (EUVD) identifier?
- Yes. CVE-2026-3954 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11348.
- When was CVE-2026-3954 published?
- CVE-2026-3954 was published on 2026-03-11 and last updated on 2026-06-17.
References
- https://github.com/OpenBMB/XAgent/
- https://github.com/OpenBMB/XAgent/issues/420
- https://github.com/OpenBMB/XAgent/issues/420#issue-3987904488
- https://vuldb.com/?ctiid.350384
- https://vuldb.com/?id.350384
- https://vuldb.com/?submit.767236
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