How severe is CVE-2026-21959?

CVE-2026-21959 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-21959 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21959?

CVE-2026-21959 affects Oracle Workflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-21959?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-21959 have an EU (EUVD) identifier?

Yes. CVE-2026-21959 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3553.

When was CVE-2026-21959 published?

CVE-2026-21959 was published on 2026-01-20 and last updated on 2026-06-17.

CVE-2026-21959

CVE-2026-21959 is a medium-severity vulnerability in Oracle Workflow with a CVSS 3.x base score of 4.9. 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: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3553
Weakness: CWE-284
Affected product: Oracle Workflow
Published: 2026-01-20
Last modified: 2026-06-17

Description

Vulnerability in the Oracle Workflow product of Oracle E-Business Suite (component: Workflow Loader). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle Workflow. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Workflow accessible data. CVSS 3.1 Base Score 4.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N).

Frequently asked questions

What is CVE-2026-21959?: Vulnerability in the Oracle Workflow product of Oracle E-Business Suite (component: Workflow Loader). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle Workflow. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Workflow accessible data. CVSS 3.1 Base Score 4.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N).
How severe is CVE-2026-21959?: CVE-2026-21959 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-21959 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21959?: CVE-2026-21959 affects Oracle Workflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-21959?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-21959 have an EU (EUVD) identifier?: Yes. CVE-2026-21959 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3553.
When was CVE-2026-21959 published?: CVE-2026-21959 was published on 2026-01-20 and last updated on 2026-06-17.

References

https://www.oracle.com/security-alerts/cpujan2026.html

Affected products (1)

cpe:2.3:a:oracle:workflow:*:*:*:*:*:*:*:*

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