jose4j before v0.9.3 allows attackers to set a low iteration count of 1000 or less.
CVE-2023-31582
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 63% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 46.6%
- KEV
- Not listed
Published
October 25, 2023
Last Modified
November 21, 2024
References (4)
- cve@mitrehttps://bitbucket.org/b_c/jose4j/issues/203/insecure-support-of-setting-pbe-less-then
- cve@mitrehttps://github.com/KANIXB/JWTIssues/blob/main/jose4j%20issue.md
- af854a3a-2127-422b-91ae-364da2661108https://bitbucket.org/b_c/jose4j/issues/203/insecure-support-of-setting-pbe-less-then
- af854a3a-2127-422b-91ae-364da2661108https://github.com/KANIXB/JWTIssues/blob/main/jose4j%20issue.md
Vendor Advisories for CVE-2023-31582(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | org.bitbucket.b_c/jose4j:0.9.3.redhat-00004 | 2023-12-07 | redhat |
| redhat | jose4j | 2023-12-06 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.bitbucket.b_c:jose4j | 0.3.6 ... 0.9.2 (41 versions) | 0.9.3 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(2)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 8× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:25 UTCEPSS rescore
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- 2026-06-09 17:17 UTCOSV refresh
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- 2026-05-24 15:18 UTCEG score recompute
- 2026-05-24 15:18 UTCVendor advisory
- 2026-05-24 12:51 UTCOSV refresh
Frequently asked(5)
What is CVE-2023-31582?
When was CVE-2023-31582 disclosed?
Is CVE-2023-31582 actively exploited?
What is the CVSS score of CVE-2023-31582?
How do I remediate CVE-2023-31582?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-31582
Is Your Infrastructure Affected by CVE-2023-31582?
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