CVE-2026-78587
CVE CVE-2026-78587EUVD EUVD-2026-70065Published 2026-09-02T14:43:26.000ZLast changed 2026-09-02T15:58:11.000ZCVSS 3.1
What the advisory describes
Incorrect Authorization (CWE-863) in Fleet Server can lead to a denial of service of agent upload operations via Privilege Abuse (CAPEC-122). Fleet Server does not correctly verify session ownership during multi-part data upload operations, allowing any authenticated agent to interfere with the active upload sessions belonging to other enrolled agents.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Elastic — Fleet Server 8.0.0 ≤8.19.15; 9.4.0 ≤9.4.1; 9.0.0 ≤9.3.4
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Elastic — Fleet Server
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