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Critical9.8Atlassian

Critical [CVE-2021-43958] Various rest resources in Fisheye and Crucible before version 4.8.9 allowed remote attackers to brute force user login…

This critical-severity Atlassian advisory covers CVE-2021-43958 affecting Fisheye, Crucible.

CVE-2021-43958 Published Mar 16, 2022Updated by vendor Jun 17, 2026
Affected products & platforms
AtlassianBamboo / Crowd / Fisheye
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Summary

Various rest resources in Fisheye and Crucible before version 4.8.9 allowed remote attackers to brute force user login credentials as rest resources did not check if users were beyond their max failed login limits and therefore required solving a CAPTCHA in addition to providing user credentials for authentication via a improper restriction of excess authentication attempts vulnerability.

Affected versions
  • 4.8.9

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 4.8.9

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

Upgrade to a fixed release: 4.8.9. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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