EUVD-2026-55245
GHSA-vx4h-hjjm-mwrc
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Network-reachable unauthenticated login endpoint with no attack complexity; low CIA impact because UnixAuth's non-production status limits credential value and downstream blast radius.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
4DescriptionCVE.org
UnixAuth lacks brute-force protection in Apache Ranger versions <= 2.8.0. Note: UnixAuth is NOT a recommended option for production deployments. Users are recommended to upgrade to version 2.9.0, which fixes this issue.
Articles & Coverage 1
AnalysisAI
Brute-force credential attacks against Apache Ranger's UnixAuth component are possible in all versions up to and including 2.8.0, because the authentication endpoint imposes no rate limiting, account lockout, or anti-automation controls (CWE-307). Any deployment that has explicitly configured UnixAuth - a configuration the vendor labels as not recommended for production - exposes its Ranger admin interface to automated password-guessing from unauthenticated network attackers. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | UnixAuth must be explicitly configured as the authentication provider in Apache Ranger - this is a non-default, vendor-discouraged configuration that the advisory explicitly labels as 'NOT a recommended option for production deployments.' The Ranger admin interface port must be reachable over the network from the attacker's position. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.3 base score is supported by a network-accessible (AV:N), low-complexity (AC:L), unauthenticated (PR:N) attack with low-across-the-board CIA impact (C:L/I:L/A:L), which accurately characterises the mechanics of an unrestricted brute-force attack. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The vendor-released patch is Apache Ranger version 2.9.0, which adds brute-force protection to the UnixAuth code path; upgrade details are in the Apache security advisory at https://lists.apache.org/thread/cx53rbkxkn5hbvzv8ohwvndzrxhc06qf. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: audit all Apache Ranger deployments for UnixAuth configuration and immediately restrict network access to affected admin interfaces using firewall rules that allow only trusted administrative networks and IP ranges. …
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External POC / Exploit Code
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