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3 vulnerabilities found for @fastify/jwt by @fastify/jwt

CVE-2026-110024 (GCVE-0-2026-110024)
Vulnerability from cvelistv5
Published
2026-10-18 14:31
Modified
2026-10-20 18:40
Severity ?
6.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-613 - Insufficient Session Expiration
Summary
@fastify/jwt is a JWT utility plugin for Fastify. In versions prior to 10.2.5, the top-level sign and verify methods replace the globally configured defaults with the per-call options instead of merging them, so passing any per-call option silently drops every global default that the call does not restate, including temporal protections such as token expiration and maximum accepted token age. A token signed this way carries no expiration claim and never expires, and verification stops enforcing a configured maximum age, so stale or never-expiring tokens are accepted. The route-level decorators for signing and verifying already merge options and are not affected. The issue is fixed in @fastify/jwt 10.2.5, and users should upgrade to 10.2.5 or later.
References
Impacted products
Vendor Product Version
@fastify/jwt @fastify/jwt Version: 0   ≤
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Show details on NVD website

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CVE-2026-107275 (GCVE-0-2026-107275)
Vulnerability from cvelistv5
Published
2026-10-08 11:05
Modified
2026-10-08 14:21
Severity ?
6.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-390 - Detection of Error Condition Without Action
  • CWE-613 - Insufficient Session Expiration
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
@fastify/jwt is a JSON Web Token plugin for the Fastify web framework. In versions before 10.2.3, a time span passed to expiresIn, notBefore, or maxAge that the plugin's parser cannot read, such as a compound span, a month unit, an ISO 8601 duration, a decimal comma, or a value with surrounding whitespace, is silently dropped instead of refused. On the signing path this produces a token with no expiration claim that never expires, and on the verification path a configured maxAge stops being enforced, so a token that should be rejected for age is accepted. The issue is fixed in @fastify/jwt 10.2.3, and users should upgrade to 10.2.3 or later. As a workaround, pass these options as a number of seconds, or verify that any time-span string parses to a finite value before relying on it.
References
Impacted products
Vendor Product Version
@fastify/jwt @fastify/jwt Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2026-18500 (GCVE-0-2026-18500)
Vulnerability from cvelistv5
Published
2026-08-15 13:16
Modified
2026-08-17 19:45
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Summary
@fastify/jwt is a JSON Web Token plugin for Fastify. In versions before 10.2.2, a per-request verification key passed to request.jwtVerify({ key }) is silently overridden by the plugin's globally configured secret, because the option merge applies the global key last. Applications that use different keys for different authorization domains, for example separate user and admin keys, therefore accept a token signed with the global key on a route that explicitly requires another key. This lets an ordinary authenticated user cross a key-based trust boundary without knowing either secret. The issue is fixed in @fastify/jwt 10.2.2, where an explicit per-call key takes precedence over the global secret. Users should upgrade to 10.2.2.
References
Impacted products
Vendor Product Version
@fastify/jwt @fastify/jwt Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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