How severe is CVE-2016-5430?

CVE-2016-5430 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2016-5430 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-5430?

CVE-2016-5430 affects Jose-php Project Jose-php. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-5430?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-5430 published?

CVE-2016-5430 was published on 2016-09-03 and last updated on 2026-06-17.

CVE-2016-5430

CVE-2016-5430 is a medium-severity vulnerability in Jose-php Project Jose-php with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Jose-php Project Jose-php
Published: 2016-09-03
Last modified: 2026-06-17

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).

Frequently asked questions

What is CVE-2016-5430?: 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).
How severe is CVE-2016-5430?: CVE-2016-5430 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2016-5430 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-5430?: CVE-2016-5430 affects Jose-php Project Jose-php. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-5430?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-5430 published?: CVE-2016-5430 was published on 2016-09-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jose-php_project:jose-php:*:*:*:*:*:*:*:*

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