CVE-2026-62374 SD JWT JS - Authentication Bypass

SD JWT JS <= 0.19.0 contains a broken authentication caused by silent dropping of tampered or invalid disclosures in @sd-jwt/decode, letting attackers manipulate claims without detection, exploit requires relying party not enforcing key binding.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.23% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
Published
29 October 2026
Updated
31 October 2026
Weakness
CWE-176

Vendor fix

Update to @sd-jwt/core version 0.20.0 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

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