Medium [CVE-2026-84890] Denial of Service via unbounded decompression of compressed responses
This medium-severity Red Hat Linux advisory covers CVE-2026-84890 affecting Exploit Intelligence, OpenShift Pipelines, Red Hat AMQ Broker 7.
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Summary
A flaw was found in undici. The decompress interceptor in undici processes compressed response bodies based on the untrusted Content-Encoding header.
A remote attacker can exploit this by sending a small, specially crafted compressed payload, known as a 'compression bomb,' which expands significantly in client memory. This unbounded decompression can lead to memory exhaustion and cause the application to crash, resulting in a Denial of Service (DoS).
Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-409.
Affected Red Hat products: Exploit Intelligence; OpenShift Pipelines; Red Hat AMQ Broker 7; Red Hat Ansible Automation Platform 2; Red Hat Build of Podman Desktop; Red Hat Developer Hub; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift Container Platform 4; Red Hat Openshift Data Foundation 4; Red Hat OpenShift Dev Spaces; Red Hat Trusted Artifact Signer; Secrets Management Console for Red Hat OpenShift; Self-service automation portal 2.
Red Hat lists Red Hat Hardened Images as not affected. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: grafana; Red Hat package: nodejs22; Red Hat package: nodejs24; Red Hat package: nodejs26.
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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