CVE-2025-27136 describes an XML External Entity (XXE) injection vulnerability in LocalS3, an Amazon S3 mock service, affecting versions prior to 1.21. This flaw allows an unauthenticated attacker to perform Server-Side Request Forgery (SSRF) by crafting a malicious XML document during bucket creation. The vulnerability has a CVSS score of 5.5 (Medium), indicating a network-based attack with low complexity that can lead to sensitive information disclosure from internal services. While there is no evidence of active exploitation, public exploit code, or significant community discussion, the potential for SSRF makes it a concern for organizations utilizing vulnerable LocalS3 instances.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Robothy | Local-S3 | < 1.21CNA affected |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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