CVE-2026-7443
CVE-2026-7443 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-77.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- CVSS v2: 7.5
- CVSS v4: 5.5
- EPSS exploit prediction: 1% (69th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-26300
- Weakness: CWE-77
- Published:
- Last modified:
Description
A weakness has been identified in BurtTheCoder mcp-dnstwist up to 1.0.4. Affected by this vulnerability is the function fuzz_domain of the file src/index.ts of the component MCP Interface. Executing a manipulation of the argument Request can lead to os command injection. The attack may be launched 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-2026-7443?
- A weakness has been identified in BurtTheCoder mcp-dnstwist up to 1.0.4. Affected by this vulnerability is the function fuzz_domain of the file src/index.ts of the component MCP Interface. Executing a manipulation of the argument Request can lead to os command injection. The attack may be launched 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-2026-7443?
- CVE-2026-7443 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-2026-7443 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-7443?
- 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-2026-7443 have an EU (EUVD) identifier?
- Yes. CVE-2026-7443 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26300.
- When was CVE-2026-7443 published?
- CVE-2026-7443 was published on 2026-04-29 and last updated on 2026-06-17.
References
- https://github.com/BruceJqs/public_exp/issues/22
- https://github.com/BurtTheCoder/mcp-dnstwist/
- https://github.com/BurtTheCoder/mcp-dnstwist/issues/13
- https://vuldb.com/submit/804027
- https://vuldb.com/vuln/360185
- https://vuldb.com/vuln/360185/cti
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