Medium severity · published May 28, 2026
CVE-2026-33463
Operation on a Resource after Expiration or Termination in Kibana Leading to Unauthorized File Access
5.3
CVSS
0.2%
EPSS
No
On KEV
Description
Operation on a Resource after Expiration or Termination (CWE-672) in Kibana can lead to unauthorized information disclosure. A logic error in how expiration timestamps were validated allowed a time-bounded access token to remain usable beyond its intended validity window, enabling an unauthenticated actor in possession of the token to retrieve the associated content after expiration.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KI
Kibana · Elastic
8.0.0 through 8.19.15; 9.0.0 through 9.3.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33463
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33463
Vendor Advisory
https://discuss.elastic.co/t/8-19-16-9-3-5-security-update-esa-2026-33/386551
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