High severity7.5NVD Advisory· Published Aug 7, 2019· Updated Jun 17, 2026

CVE-2016-5431

Description

The PHP JOSE Library by Gree Inc. before version 2.2.1 is vulnerable to key confusion/algorithm substitution in the JWS component resulting in bypassing the signature verification via crafted tokens.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
gree/josePackagist	< 2.2.1	2.2.1

Affected products

PHP Jose Project/PHP Jose
cpe:2.3:a:php_jose_project:php_jose:*:*:*:*:*:*:*:*
Range: <2.2.1
ghsa-coords
pkg:composer/gree/jose
Range: < 2.2.1

Patches

Vulnerability mechanics

References

github.com/nov/jose-php/commit/1cce55e27adf0274193eb1cd74b927a398a3df4bnvdPatchWEB
github.com/advisories/GHSA-xm5f-hc9r-76f3ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2016-5431ghsaADVISORY

News mentions

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cvss	0.488
epss	0.001
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000