Broken or risky cryptographic algorithm in jose-php
Priority LOW 35CWE-327Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-327.
Summary
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.
Why it matters now
EPSS 0.00955 61st percentileScored 2026-11-07
Fix Fixed gree/jose (Packagist): 2.2.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | jose-php | fixed in 2.2.1 | — | No fix listed | CNA |
| — | gree/jose (Packagist) | before 2.2.1 | 2.2.1 | Patch available | GHSA-xm5f-hc9r-76f3 |
- jose-php Vendor— Affected fixed in 2.2.1 Fixed in — No fix listed CNA
- gree/jose (Packagist) Vendor— Affected before 2.2.1 Fixed in 2.2.1 Patch available GHSA-xm5f-hc9r-76f3
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php_jose_project:php_jose:*:*:*:*:*:*:*:* | before 2.2.1 | Vulnerable | Php Jose Project |
- cpe:2.3:a:php_jose_project:php_jose:*:*:*:*:*:*:*:* Versions before 2.2.1 Vulnerable ·Php Jose Project
Remediation
- Fix · GHSA-xm5f-hc9r-76f3 gree/jose (Packagist) Fixed in 2.2.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2016-5431
- 2026-10-03 Alias added: GHSA-xm5f-hc9r-76f3
References
Sources
- CVE-2016-5431 · CVE Program
- CVE-2016-5431 · NVD
- FIRST EPSS
- GHSA-xm5f-hc9r-76f3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences