How severe is CVE-2026-46840?

CVE-2026-46840 has a CVSS 3.x base score of 10.0, 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 high.

Is CVE-2026-46840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-46840?

CVE-2026-46840 affects Oracle Rest Data Services. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-46840?

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-2026-46840 have an EU (EUVD) identifier?

Yes. CVE-2026-46840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33018.

When was CVE-2026-46840 published?

CVE-2026-46840 was published on 2026-05-28 and last updated on 2026-07-21.

CVE-2026-46840

CVE-2026-46840 is a critical-severity vulnerability in Oracle Rest Data Services with a CVSS 3.x base score of 10.0. 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-284.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33018
Weakness: CWE-284
Affected product: Oracle Rest Data Services
Published: 2026-05-28
Last modified: 2026-07-21

Description

Vulnerability in Oracle REST Data Services (component: Backend-as-a-Service). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle REST Data Services. While the vulnerability is in Oracle REST Data Services, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle REST Data Services. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

Frequently asked questions

What is CVE-2026-46840?: Vulnerability in Oracle REST Data Services (component: Backend-as-a-Service). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle REST Data Services. While the vulnerability is in Oracle REST Data Services, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle REST Data Services. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
How severe is CVE-2026-46840?: CVE-2026-46840 has a CVSS 3.x base score of 10.0, 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 high.
Is CVE-2026-46840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-46840?: CVE-2026-46840 affects Oracle Rest Data Services. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-46840?: 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-2026-46840 have an EU (EUVD) identifier?: Yes. CVE-2026-46840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33018.
When was CVE-2026-46840 published?: CVE-2026-46840 was published on 2026-05-28 and last updated on 2026-07-21.

References

https://www.oracle.com/security-alerts/cspumay2026.html

Affected products (1)

cpe:2.3:a:oracle:rest_data_services:*:*:*:*:*:*:*:*

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