CVE-2026-7891
CVE-2026-7891 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. 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-277.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.3)
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-28463
- Weakness: CWE-277
- Published:
- Last modified:
Description
The VerySecureApp made by DIVD using Mendix Studio Pro 11.8.0 Beta allows unintended data exposure due to authorization misconfiguration. The VerySecureApp allows anonymous users of the MyFirstModule with the anonymous user role to gain access to all stored records, even though no access rights are explicitly configured on that role. Anonymous users are required to make a Mendix Entity available publicly. All versions of Mendix Studio Pro up to 11.8.0 Beta silently make an Anonymous user role follow user inheritance rules, without mentioning this explicitly in the documentation.
Frequently asked questions
- What is CVE-2026-7891?
- The VerySecureApp made by DIVD using Mendix Studio Pro 11.8.0 Beta allows unintended data exposure due to authorization misconfiguration. The VerySecureApp allows anonymous users of the MyFirstModule with the anonymous user role to gain access to all stored records, even though no access rights are explicitly configured on that role. Anonymous users are required to make a Mendix Entity available publicly. All versions of Mendix Studio Pro up to 11.8.0 Beta silently make an Anonymous user role follow user inheritance rules, without mentioning this explicitly in the documentation.
- How severe is CVE-2026-7891?
- CVE-2026-7891 has a CVSS 4.0 base score of 9.3, rated critical severity.
- Is CVE-2026-7891 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-7891?
- 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-2026-7891 have an EU (EUVD) identifier?
- Yes. CVE-2026-7891 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28463.
- When was CVE-2026-7891 published?
- CVE-2026-7891 was published on 2026-05-07 and last updated on 2026-06-17.
References
Other CWE-277 vulnerabilities
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- CVE-2024-36542 — High (CVSS 8.8): Insecure permissions in kuma v2.7.0 allows attackers to access sensitive data and escalate privileges by obtaining the…
- CVE-2024-6605 — High (CVSS 8.8): Firefox Android allowed immediate interaction with permission prompts. This could be used for tapjacking. This…
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- CVE-2024-34329 — High (CVSS 8.4): Insecure permissions in Entrust Datacard XPS Card Printer Driver 8.5 and earlier without the dxp1-patch-E24-004 patch…