How severe is CVE-2026-93758?

CVE-2026-93758 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-93758 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-93758?

CVE-2026-93758 primarily affects Mongodb Mongoid. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-93758?

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.

When was CVE-2026-93758 published?

CVE-2026-93758 was published on 2026-09-18 and last updated on 2026-09-25.

CVE-2026-93758

CVE-2026-93758 is a high-severity vulnerability in Mongodb Mongoid with a CVSS 3.x base score of 8.1. 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 3.x base score 8.1)
CVSS v4: 8.6
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Mongodb Mongoid
Published: 2026-09-18
Last modified: 2026-09-25

Description

An insecure direct object reference in the nested attributes handling of the Mongoid object-document mapper may allow a user with basic application privileges to reference a record identifier that is not their own. Processing such a request can cause that record to be looked up without the usual ownership or scoping restrictions, then updated and linked to the requesting user's own record. This may result in unintended disclosure and unauthorized modification of data belonging to other users of the application.

Frequently asked questions

What is CVE-2026-93758?: An insecure direct object reference in the nested attributes handling of the Mongoid object-document mapper may allow a user with basic application privileges to reference a record identifier that is not their own. Processing such a request can cause that record to be looked up without the usual ownership or scoping restrictions, then updated and linked to the requesting user's own record. This may result in unintended disclosure and unauthorized modification of data belonging to other users of the application.
How severe is CVE-2026-93758?: CVE-2026-93758 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-93758 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-93758?: CVE-2026-93758 primarily affects Mongodb Mongoid. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-93758?: 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.
When was CVE-2026-93758 published?: CVE-2026-93758 was published on 2026-09-18 and last updated on 2026-09-25.

References

https://jira.mongodb.org/browse/MONGOID-5992

Affected products (2)

cpe:2.3:a:mongodb:mongoid:*:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:mongoid:9.1.0:*:*:*:*:*:*:*

More vulnerabilities in Mongodb Mongoid

CVE-2026-93762 — Critical (CVSS 9.8): Mongoid contains an unsafe reflection weakness in the query path used for embedded documents. An application that…
CVE-2026-93765 — Critical (CVSS 9.1): Mongoid contains an unsafe reflection weakness in the document persistence layer of its object-document mapping code.…
CVE-2026-93759 — High (CVSS 8.6): Mongoid does not neutralize a string-typed query criterion supplied to its query builder, and instead passes it to the…
CVE-2026-93760 — High (CVSS 8.2): Mongoid does not restrict which query operators may come from caller-supplied filter data when an application hands…
CVE-2026-93761 — High (CVSS 7.5): An inefficient regular expression complexity issue in the in-memory query evaluation component of the Mongoid library…
CVE-2026-93764 — Medium (CVSS 6.5): Mongoid may omit encryption rules for fields declared on embedded models when generating the client-side field-level…

All CVEs affecting Mongodb Mongoid →

Other CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities

CVE-2026-69865 — Critical (CVSS 10.0): Authorization bypass through user-controlled key in Microsoft Container Registry allows an unauthorized attacker to…
CVE-2026-83711 — Critical (CVSS 10.0): Authorization bypass through user-controlled key in Microsoft Azure Active Directory B2C allows an unauthorized…
CVE-2026-77998 — Critical (CVSS 10.0): Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML…
CVE-2026-77995 — Critical (CVSS 10.0): Joomla Extension - miniorange.com - Arbitrary account takeover in miniOrange OAuth Client < 3.2.0, OAuth Single Sign-On…
CVE-2025-40805 — Critical (CVSS 10.0): Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an…
CVE-2024-45032 — Critical (CVSS 10.0): A vulnerability has been identified in Industrial Edge Management Pro (All versions < V1.9.5), Industrial Edge…

Browse all CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities →