High [CVE-2026-104988] EST fullcmc authentication bypass allows certificate mis-issuance with arbitrary subject
This high-severity Red Hat Linux advisory covers CVE-2026-104988; related products: Red Hat Certificate System 10, Red Hat Certificate System 11.
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Summary
EST fullcmc authentication bypass allows certificate mis-issuance with arbitrary subject. Red Hat rates this important (CVSS 8.1).
Weakness: CWE-290.
Affected products named by the advisory: Red Hat Certificate System 10; Red Hat Certificate System 11.
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 3 days 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 · high-confidence parse· fetched 3 days ago·verify at source
Mitigation checklist
- Disable basic authentication for all users. This can be done by removing the field "UserPasswords" for the user entries in the EST DS server.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
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