How severe is CVE-2026-40920?

CVE-2026-40920 has a CVSS 3.x base score of 9.8, 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-2026-40920 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40920?

CVE-2026-40920 affects Apache Ranger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40920?

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.

When was CVE-2026-40920 published?

CVE-2026-40920 was published on 2026-08-10 and last updated on 2026-08-17.

CVE-2026-40920

CVE-2026-40920 is a critical-severity vulnerability in Apache Ranger with a CVSS 3.x base score of 9.8. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Apache Ranger
Published: 2026-08-10
Last modified: 2026-08-17

Description

Privilege Escalation via URL Parameter is reported in Apache Ranger versions <= 2.8.0. Users are recommended to upgrade to version 2.9.0, which fixes this issue.

Frequently asked questions

What is CVE-2026-40920?: Privilege Escalation via URL Parameter is reported in Apache Ranger versions <= 2.8.0. Users are recommended to upgrade to version 2.9.0, which fixes this issue.
How severe is CVE-2026-40920?: CVE-2026-40920 has a CVSS 3.x base score of 9.8, 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-2026-40920 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40920?: CVE-2026-40920 affects Apache Ranger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40920?: 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.
When was CVE-2026-40920 published?: CVE-2026-40920 was published on 2026-08-10 and last updated on 2026-08-17.

References

Affected products (1)

cpe:2.3:a:apache:ranger:*:*:*:*:*:*:*:*

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