CVE-2026-54155 node-opcua - Authentication Bypass

node-opcua < 2.166.0 contains a broken authentication caused by improper verification of RSA-OAEP password blob and missing nonce binding in UserNameIdentityToken handler, letting unauthenticated remote attackers compromise accounts and replay tokens, exploit requires attacker to obtain server public key.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.42% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-347

Vendor fix

Update to version 2.166.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs