CVE-2016-5431

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.

Affected

jose-php

CVSS v3.1 NVD

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS

0.95% chance of exploitation in the next 30 days, 61st percentile

Published

2019-08-07

Updated

2024-08-06

Proof-of-concept exploits (1)

• achmadismail173/jwt_exploit5★ · 2025-07-28

Security advisories

• advisories/GHSA-xm5f-hc9r-76f3
• nov/jose-php/commit/1cce55e27adf0274193eb1cd74b927a398a3df4b

References

• CVE Record
• NVD entry

Related

• CVE-2015-9235
• CVE-2018-0114
• CVE-2020-28042
• CVE-2023-48238