---
title: "CVE-2026-62374: SD JWT JS - Authentication Bypass"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-62374/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-62374)

## 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](https://cwe.mitre.org/data/definitions/176.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-62374](https://nvd.nist.gov/vuln/detail/CVE-2026-62374)
- [https://github.com/openwallet-foundation/sd-jwt-js/security/advisories/GHSA-f9j6-8p6x-r9j6](https://github.com/openwallet-foundation/sd-jwt-js/security/advisories/GHSA-f9j6-8p6x-r9j6)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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