CVE-2026-7404
CVE-2026-7404 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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: High (CVSS 3.x base score 7.3)
- CVSS v2: 7.5
- CVSS v4: 5.5
- EPSS exploit prediction: 1% (40th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-26288
- Weakness: CWE-22
- Published:
- Last modified:
Description
A weakness has been identified in getsimpletool mcpo-simple-server up to 0.2.0. Affected is the function delete_shared_prompt of the file src/mcpo_simple_server/services/prompt_manager/base_manager.py. This manipulation of the argument detail causes relative path traversal. It is possible to initiate the attack 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-2026-7404?
- A weakness has been identified in getsimpletool mcpo-simple-server up to 0.2.0. Affected is the function delete_shared_prompt of the file src/mcpo_simple_server/services/prompt_manager/base_manager.py. This manipulation of the argument detail causes relative path traversal. It is possible to initiate the attack 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-2026-7404?
- CVE-2026-7404 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-7404 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-7404?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-7404 have an EU (EUVD) identifier?
- Yes. CVE-2026-7404 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26288.
- When was CVE-2026-7404 published?
- CVE-2026-7404 was published on 2026-04-29 and last updated on 2026-06-17.
References
- https://github.com/getsimpletool/mcpo-simple-server/
- https://github.com/getsimpletool/mcpo-simple-server/issues/4
- https://vuldb.com/submit/803612
- https://vuldb.com/vuln/360140
- https://vuldb.com/vuln/360140/cti
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