Is CVE-2026-85393 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-85393?

CVE-2026-85393 has a CVSS v3 severity of HIGH (7.5).

Back

CVE-2026-85393

Description

node-forge through 1.4.0 fails to validate element count in nested DigestAlgorithm sequences during RSA PKCS#1 v1.5 signature verification. Attackers can embed garbage bytes inside the DigestAlgorithm sequence to forge valid signatures for arbitrary messages using low-exponent RSA keys. This is an incomplete fix for CVE-2026-33894.