What’s Vulnerable › Vulnerabilities

CVE-2023-31582

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-25 · updated 2026-06-17
• Weakness: CWE-331

Description

jose4j before v0.9.3 allows attackers to set a low iteration count of 1000 or less.

Affected products

• Jose4J Project Jose4J: before 0.9.3 — fixed in 0.9.3

How to fix

Upgrade to a fixed version: Jose4J Project Jose4J 0.9.3. Check the vendor advisory for mitigations.

References

• https://bitbucket.org/b_c/jose4j/issues/203/insecure-support-of-setting-pbe-less-then
• https://github.com/KANIXB/JWTIssues/blob/main/jose4j%20issue.md
• https://bitbucket.org/b_c/jose4j/issues/203/insecure-support-of-setting-pbe-less-then
• https://github.com/KANIXB/JWTIssues/blob/main/jose4j%20issue.md

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