How severe is CVE-2026-7042?

CVE-2026-7042 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-2026-7042 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7042?

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-2026-7042 have an EU (EUVD) identifier?

Yes. CVE-2026-7042 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25719.

When was CVE-2026-7042 published?

CVE-2026-7042 was published on 2026-04-26 and last updated on 2026-06-17.

CVE-2026-7042

CVE-2026-7042 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-287.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
CVSS v4: 5.5
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25719
Weakness: CWE-287
Published: 2026-04-26
Last modified: 2026-06-17

Description

A flaw has been found in 666ghj MiroFish up to 0.1.2. This affects the function create_app of the file backend/app/__init__.py of the component REST API Endpoint. Executing a manipulation can lead to missing authentication. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Frequently asked questions

What is CVE-2026-7042?: A flaw has been found in 666ghj MiroFish up to 0.1.2. This affects the function create_app of the file backend/app/__init__.py of the component REST API Endpoint. Executing a manipulation can lead to missing authentication. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
How severe is CVE-2026-7042?: CVE-2026-7042 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-2026-7042 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-7042?: 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-2026-7042 have an EU (EUVD) identifier?: Yes. CVE-2026-7042 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25719.
When was CVE-2026-7042 published?: CVE-2026-7042 was published on 2026-04-26 and last updated on 2026-06-17.

References

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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