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SCA: security update for fast-jwt (GHSA-x937-hj6v-793p)

medium Tenable Self-Hosted Container Security Plugin ID 473949

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.3.4, the fast-jwt createVerifier
 cache can continue accepting a previously valid, signed JWT after its exp time when caching is enabled and
 the token has exp but no iat. In src/verifier.js, cacheSet derives the exp cache deadline only when iat is
 present, so the cache falls back to cacheTTL, and a later cache hit returns the saved payload before
 verifyToken rechecks expiration. An attacker who can replay the same cached bearer token can extend access
 until the cache entry expires, but cannot forge a token through this issue. This issue is fixed in version
 6.3.4. (CVE-2026-107719)

Solution

Update the fast-jwt library and its related packages to version 6.3.4 or later.

See Also

https://github.com/advisories/GHSA-x937-hj6v-793p

Plugin Details

Severity: Medium

ID: 473949

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/9/2026

Updated: 10/9/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 8.15

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

Vector: CVSS2#AV:N/AC:H/Au:S/C:P/I:P/A:N

CVSS Score Source: CVE-2026-107719

CVSS v3

Risk Factor: Medium

Base Score: 4.2

Temporal Score: 3.7

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/8/2026

Vulnerability Publication Date: 10/8/2026

Reference Information

CVE: CVE-2026-107719

cwe: CWE-613