How severe is CVE-2026-42537?

CVE-2026-42537 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-2026-42537 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42537?

CVE-2026-42537 affects Apache Ranger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42537?

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-2026-42537 published?

CVE-2026-42537 was published on 2026-08-10 and last updated on 2026-08-17.

CVE-2026-42537

CVE-2026-42537 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% (66th 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

Remote Code Execution via JDBC URL Injection in Apache Ranger <= 2.8.0 Users are recommended to upgrade to version 2.9.0, which fixes this issue.

Frequently asked questions

What is CVE-2026-42537?: Remote Code Execution via JDBC URL Injection in Apache Ranger <= 2.8.0 Users are recommended to upgrade to version 2.9.0, which fixes this issue.
How severe is CVE-2026-42537?: CVE-2026-42537 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-2026-42537 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42537?: CVE-2026-42537 affects Apache Ranger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42537?: 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-2026-42537 published?: CVE-2026-42537 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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