High [CVE-2026-87822] Denial of Service via NaN centroid injection during deserialization
This high-severity Red Hat Linux advisory covers CVE-2026-87822 affecting Red Hat Fuse 7, Red Hat Offline Knowledge Portal.
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Summary
A flaw was found in t-digest. A remote attacker can exploit a vulnerability in the `MergingDigest.fromBytes` deserialization process by injecting specially crafted "Not a Number" (NaN) values.
These malicious values bypass validation checks, degrading sorting performance from efficient to significantly slower. This can lead to severe processing delays during merge operations, resulting in a Denial of Service (DoS) for the affected system.
Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-502.
Affected Red Hat products: Red Hat Fuse 7; Red Hat Offline Knowledge Portal. Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
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