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CVE-2021-41106: File reference keys leads to incorrect hashes on HMAC algorithms

medium Affects lcobucci/jwt. Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

File reference keys leads to incorrect hashes on HMAC algorithms

Package
lcobucci/jwt Composer
Affected versions
>=3.4.0 and <3.4.6 or >=4.0.0 and <4.0.4 or >=4.1.0 and <4.1.5
Fixed in
3.4.6, 4.0.4, 4.1.5
Severity
medium  CVSS 4.4
Exploitation
not on CISA KEV · EPSS 0% (10.5th percentile)
Published
2021-09-29
Source
osv.dev

References

CWE-345
NVD recordlcobucci/jwt advisories

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# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

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