Improper input validation in Atlassian Fisheye and Crucible
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
Fisheye and Crucible did not correctly check if a configured Mercurial repository URI contained values that the Windows operating system may consider argument parameters. An attacker who has permission to add a repository in Fisheye or Crucible can execute code of their choice on systems that run a vulnerable version of Fisheye or Crucible on the Windows operating system. All versions of Fisheye and Crucible before 4.4.6 (the fixed version for 4.4.x) and from 4.5.0 before 4.5.3 (the fixed version for 4.5.x) are affected by this vulnerability.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Atlassian | Fisheye and Crucible | before 4.4.6; 4.5.0 and later; before 4.5.3 | 4.4.6, 4.5.3 | Patch available | CNA |
- Fisheye and Crucible VendorAtlassian Affected before 4.4.6; 4.5.0 and later; before 4.5.3 Fixed in 4.4.6, 4.5.3 Patch available CNA
Remediation
- Fix · CNA Fisheye and Crucible (Atlassian) Fixed in 4.4.6, 4.5.3
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5223
- 2026-10-03 Alias added: GHSA-cmrm-j5wq-2rcr
References
More Atlassian Crucible vulnerabilities
- 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-2021-19720 Missing brute-force protection in Atlassian Fisheye 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
Sources
- CVE-2018-5223 · CVE Program
- CVE-2018-5223 · NVD
- FIRST EPSS
- GHSA-cmrm-j5wq-2rcr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences