CVE-2026-85393
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductDigitalbazaar Forge
PublishedSep 3, 2026
First seenSep 3, 2026
Weakness typeCWE-347CWE-347
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| digitalbazaar forge | v ≤ 1.4.0 | — |
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