Server-side request forgery in Atlassian Application Links
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
The OAuth status rest resource in Atlassian Application Links before version 5.2.7, from 5.3.0 before 5.3.4 and from 5.4.0 before 5.4.3 allows remote attackers with administrative rights to access the content of internal network resources via a Server Side Request Forgery (SSRF) by creating an OAuth application link to a location they control and then redirecting access from the linked location's OAuth status rest resource to an internal location. When running in an environment like Amazon EC2, this flaw maybe used to access to a metadata resource that provides access credentials and other potentially confidential information.
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 | Atlassian Application Links | before 5.2.7; 5.3.0 and later; before 5.3.4; 5.4.0 and later; before 5.4.3 | 5.2.7, 5.3.4, 5.4.3 | Patch available | CNA |
- Atlassian Application Links VendorAtlassian Affected before 5.2.7; 5.3.0 and later; before 5.3.4; 5.4.0 and later; before 5.4.3 Fixed in 5.2.7, 5.3.4, 5.4.3 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:atlassian:application_links:*:*:*:*:*:*:*:* | before 5.2.7; 5.3.0 to before 5.3.4; 5.4.0 to before 5.4.3 | Vulnerable | Atlassian |
- cpe:2.3:a:atlassian:application_links:*:*:*:*:*:*:*:* Versions before 5.2.7; 5.3.0 to before 5.3.4; 5.4.0 to before 5.4.3 Vulnerable ·Atlassian
Remediation
- Fix · CNA Atlassian Application Links (Atlassian) Fixed in 5.2.7, 5.3.4, 5.4.3
Timeline
- 2026-10-02 Threatist record created from CVE-2017-18096
- 2026-10-03 Alias added: GHSA-3jwg-839p-m5gf
References
More Atlassian Application Links vulnerabilities
- TI-2017-13318 XML external entity injection in Atlassian Application Links CVSS 3.0HIGH 8.7
- TI-2018-14346 Cross-site scripting in Atlassian Application Links CVSS 3.1MEDIUM 5.4
- TI-2017-12406 Cross-site scripting in Atlassian Application Links CVSS 3.0MEDIUM 6.1
- TI-2019-14513 Missing authentication in Atlassian Application Links CVSS 3.1MEDIUM 4.9
- TI-2018-03784 Cross-site scripting in Atlassian Application Links CVSS 3.0MEDIUM 4.8
- TI-2019-11197 Incorrect default permissions in Atlassian Application Links CVSS 3.1MEDIUM 4.3
Sources
- CVE-2017-18096 · CVE Program
- CVE-2017-18096 · NVD
- FIRST EPSS
- GHSA-3jwg-839p-m5gf · GitHub Advisory Database · CC BY 4.0
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