How severe is CVE-2026-56073?

CVE-2026-56073 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2026-56073 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-56073?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-56073 have an EU (EUVD) identifier?

Yes. CVE-2026-56073 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38092.

When was CVE-2026-56073 published?

CVE-2026-56073 was published on 2026-06-19 and last updated on 2026-06-22.

CVE-2026-56073

CVE-2026-56073 is a critical-severity vulnerability with a CVSS 3.x base score of 9.4. 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-345.

Key facts

Severity: Critical (CVSS 3.x base score 9.4)
CVSS v4: 9.3
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38092
Weakness: CWE-345
Published: 2026-06-19
Last modified: 2026-06-22

Description

Cap-go before 12.128.2 contains an authentication bypass vulnerability in OTP verification that allows attackers to bypass email verification by modifying server responses. Attackers can intercept OTP verification requests and manipulate HTTP responses to falsely mark verification successful, enabling unauthorized 2FA enablement and account takeover.

Frequently asked questions

What is CVE-2026-56073?: Cap-go before 12.128.2 contains an authentication bypass vulnerability in OTP verification that allows attackers to bypass email verification by modifying server responses. Attackers can intercept OTP verification requests and manipulate HTTP responses to falsely mark verification successful, enabling unauthorized 2FA enablement and account takeover.
How severe is CVE-2026-56073?: CVE-2026-56073 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2026-56073 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-56073?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-56073 have an EU (EUVD) identifier?: Yes. CVE-2026-56073 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38092.
When was CVE-2026-56073 published?: CVE-2026-56073 was published on 2026-06-19 and last updated on 2026-06-22.

References

Other CWE-345 (Insufficient Verification of Data Authenticity) vulnerabilities

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