CVE-2016-5430

Name: CVE-2016-5430
Creator: NVD / NIST
Published: 2016-09-03T20:59:07.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.74%

Last modified Jun 17, 2026

CVE-2016-5430 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The RSA 1.5 algorithm implementation in the JOSE_JWE class in JWE.php in jose-php before 2.2.1 lacks the Random Filling protection mechanism, which makes it easier for remote attackers to obtain cleartext data via a Million Message Attack (MMA).. EPSS estimates a 1.74% chance of exploitation in the next 30 days.

Description

The RSA 1.5 algorithm implementation in the JOSE_JWE class in JWE.php in jose-php before 2.2.1 lacks the Random Filling protection mechanism, which makes it easier for remote attackers to obtain cleartext data via a Million Message Attack (MMA).

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

1.74%

74.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Jose-Php Project	Jose-Php	< 2.2.1

References

http://www.securityfocus.com/bid/92741Third Party Advisory, VDB Entry
https://github.com/nov/jose-php/commit/f03b986b4439e20b0fd635109b48afe96cf0099b#diff-37b0d289d6375ba4a7740401950ccdd6R199Patch
http://www.securityfocus.com/bid/92741Third Party Advisory, VDB Entry
https://github.com/nov/jose-php/commit/f03b986b4439e20b0fd635109b48afe96cf0099b#diff-37b0d289d6375ba4a7740401950ccdd6R199Patch

Timeline

Published: Sep 3, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-5430?

How severe is CVE-2016-5430?

CVE-2016-5430 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.74% probability of exploitation in the next 30 days.

How do I fix CVE-2016-5430?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-5430?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST