CVE-2026-82432 Apache Nimbus - Broken Access Control

Apache Nimbus < 3.1.0 contains an authorization bypass caused by insufficient validation of topology.blobstore.map and lack of authorization in listBlobs, letting attackers with rebalance rights or network access disclose blob metadata and introduce unauthorized blobstore entries, exploit requires rebalance privileges or network access to Nimbus Thrift port.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.37% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-863

Vendor fix

Upgrade to version 3.1.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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