CVEvulnerability
CVE-2026-85393
8.7 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-09-03
- Last modified
- 2026-09-24
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 8.7 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-347
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.
Related
Weakness · CWE (1)
- CWE-347 Improper Verification of Cryptographic Signature weakness
References
- https://github.com/advisories/GHSA-ppp5-5v6c-4jwp github.com
- https://github.com/digitalbazaar/forge github.com
- https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/asn1.js github.com
- https://github.com/digitalbazaar/forge/blob/v1.4.0/lib/rsa.js github.com
- https://github.com/digitalbazaar/forge/issues/1149 github.com
- https://www.vulncheck.com/advisories/node-forge-through-1.4.0-rsa-pkcs-1-1.5-signature-forgery-via-nested-digestalgorithm-padding www.vulncheck.com
- https://github.com/advisories/GHSA-ppp5-5v6c-4jwp github.com