CVE-2021-26699
Published: 22 July 2021
Summary
CVE-2021-26699 is a medium-severity SSRF (CWE-918) vulnerability in Open-Xchange Open-Xchange Appsuite. Its CVSS base score is 5.4 (Medium).
Operationally, ranked in the top 34.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-13491
Vulnerability details
OX App Suite before 7.10.3-rev4 and 7.10.4 before 7.10.4-rev4 allows SSRF via a shared SVG document that is mishandled by the imageconverter component when the .png extension is used.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.
Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.
Validates server-side URLs and resource references to block SSRF attempts.
Detects server-side request forgery through monitoring of unexpected outbound connections.