High [CVE-2026-83616] XML Structure Injection via Unvalidated Processing Instruction Targets
This high-severity Red Hat Linux advisory covers CVE-2026-83616 affecting Red Hat OpenShift Container Platform 4.
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Summary
A flaw was found in xmldom, a JavaScript module for parsing and serializing XML. An attacker can exploit a vulnerability in how processing instructions are handled to inject arbitrary XML structures.
This occurs because the software fails to properly validate input, allowing special characters to bypass security checks. Successful exploitation could lead to data manipulation or other integrity impacts within applications processing the affected XML.
Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N). Weakness: CWE-91.
Affected Red Hat products: Red Hat OpenShift Container Platform 4. 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 · high-confidence parse· fetched 1 hour ago·verify at source
- 0.8.15
- 0.9.12
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation
Upgrade to a fixed release: 0.8.15, 0.9.12. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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