CVE-2026-82438 Apache Storm - Broken Access Control

Apache Storm < 3.1.0 contains a broken access control caused by improper CORS and JSONP handling in HTTP components, letting authenticated users' web pages on unrelated origins read sensitive cluster and log data, exploit requires authenticated user interaction.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure
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-346

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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