CVE-2026-3020
CVE-2026-3020 is a high-severity vulnerability with a CVSS 4.0 base score of 8.6. 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-639.
Key facts
- Severity: High (CVSS 4.0 base score 8.6)
- EPSS exploit prediction: 0% (15th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-12389
- Weakness: CWE-639
- Published:
- Last modified:
Description
Identity based authorization bypass vulnerability (IDOR) that allows an attacker to modify the data of a legitimate user account, such as changing the victim's email address, validating the new email address, and requesting a new password. This could allow them to take complete control of other users' legitimate accounts
Frequently asked questions
- What is CVE-2026-3020?
- Identity based authorization bypass vulnerability (IDOR) that allows an attacker to modify the data of a legitimate user account, such as changing the victim's email address, validating the new email address, and requesting a new password. This could allow them to take complete control of other users' legitimate accounts
- How severe is CVE-2026-3020?
- CVE-2026-3020 has a CVSS 4.0 base score of 8.6, rated high severity.
- Is CVE-2026-3020 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-3020?
- 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-2026-3020 have an EU (EUVD) identifier?
- Yes. CVE-2026-3020 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12389.
- When was CVE-2026-3020 published?
- CVE-2026-3020 was published on 2026-03-16 and last updated on 2026-06-17.
References
Other CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities
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