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TI-2021-19720 Aliases CVE-2021-43958GHSA-j832-43w3-m333

Missing brute-force protection in Atlassian Fisheye

Priority MEDIUM 52CWE-307Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-307.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01465 73rd percentileScored 2026-11-07
Fix Fixed Fisheye (Atlassian): 4.8.9Crucible (Atlassian): 4.8.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AtlassianFisheyebefore 4.8.94.8.9Patch availableCNA
AtlassianCruciblebefore 4.8.94.8.9Patch availableCNA
  • Fisheye VendorAtlassian Affected before 4.8.9 Fixed in 4.8.9 Patch available CNA
  • Crucible VendorAtlassian Affected before 4.8.9 Fixed in 4.8.9 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:atlassian:crucible:*:*:*:*:*:*:*:*before 4.8.9VulnerableAtlassian
cpe:2.3:a:atlassian:fisheye:*:*:*:*:*:*:*:*before 4.8.9VulnerableAtlassian
  • cpe:2.3:a:atlassian:crucible:*:*:*:*:*:*:*:* Versions before 4.8.9 Vulnerable ·Atlassian
  • cpe:2.3:a:atlassian:fisheye:*:*:*:*:*:*:*:* Versions before 4.8.9 Vulnerable ·Atlassian

Remediation

  • Fix · CNA Fisheye (Atlassian) Fixed in 4.8.9
  • Fix · CNA Crucible (Atlassian) Fixed in 4.8.9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Atlassian Crucible, Fisheye 4.8.9

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2021-19719 Authorization bypass in Atlassian FisheyePriority MEDIUM 41
    • TI-2021-19718 Prototype pollution in Atlassian FisheyePriority LOW 29
    • TI-2021-19717 The /rest-service-fecru/server-v1 resource in Fisheye and Crucible before version 4.8.9…Priority LOW 22
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-43958
  2. 2026-10-03 Alias added: GHSA-j832-43w3-m333

References

Advisory 2

  • TI-2026-67904 Arbitrary file access in Atlassian Data Center products KEVCVSS 4.0CRITICAL 9.3
  • TI-2024-14399 Code injection in Atlassian Confluence Data Center CVSS 3.1HIGH 8.8
  • TI-2012-02540 Atlassian JIRA before 5.0.1; Confluence before 3.5.16, 4.0 before 4.0.7, and 4.1 before… CVSS 3.1CRITICAL 9.1
  • TI-2022-09598 Improper authentication in Atlassian Bamboo Server CVSS 3.1CRITICAL 9.8
  • TI-2017-12407 It was possible for double OGNL evaluation in certain redirect action and in WebWork URL… CVSS 3.0CRITICAL 9.8
  • TI-2022-09599 Origin validation error in Atlassian Bamboo Server CVSS 3.1HIGH 8.8
See all 52 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences