{"cve":"CVE-2025-27088","nvd":{"published":"2025-02-20T23:15:13.397","modified":"2026-06-17T09:03:00.583","status":"Analyzed","description":"oxyno-zeta/s3-proxy is an aws s3 proxy written in go. In affected versions a Reflected Cross-site Scripting (XSS) vulnerability enables attackers to create malicious URLs that, when visited, inject scripts into the web application. This can lead to session hijacking or phishing attacks on a trusted domain, posing a moderate risk to all users. It's possible to inject html elements, including scripts through the folder-list template. The affected template allows users to interact with the URL path provided by the `Request.URL.Path` variable, which is then rendered directly into the HTML without proper sanitization or escaping. This can be abused by attackers who craft a malicious URL containing injected HTML or JavaScript. When users visit such a URL, the malicious script will be executed in the user's context. This issue has been addressed in version 4.18.1 and all users are advised to upgrade. There are no known workarounds for this vulnerability.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N","score":8.4},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","score":8.2},"cwes":["CWE-79"],"references":["https://github.com/oxyno-zeta/s3-proxy/blob/master/templates/folder-list.tpl#L19C21-L19C38","https://github.com/oxyno-zeta/s3-proxy/commit/c611c741ed4872ea3f46232be23bb830f96f9564","https://github.com/oxyno-zeta/s3-proxy/security/advisories/GHSA-pp9m-qf39-hxjc","https://github.com/oxyno-zeta/s3-proxy/security/advisories/GHSA-pp9m-qf39-hxjc"],"products":["oxyno-zeta:s3-proxy"],"source":"nvd","synced_at":"2026-10-19T21:59:18.731010617+00:00"},"epss":{"cve":"CVE-2025-27088","score":0.00497,"percentile":0.42623,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-pp9m-qf39-hxjc","url":"https://osv.dev/vulnerability/GHSA-pp9m-qf39-hxjc","summary":"S3-Proxy allows Reflected Cross-site Scripting (XSS) in template implementation","modified":"2026-09-10T03:50:22.862610277Z","packages":[{"ecosystem":"Go","name":"github.com/oxyno-zeta/s3-proxy/cmd/s3-proxy","purl":"pkg:golang/github.com/oxyno-zeta/s3-proxy/cmd/s3-proxy","ranges":["<0.0.0-20250220214310-c611c741ed48"],"fixed":["0.0.0-20250220214310-c611c741ed48"]}]},{"id":"GO-2025-3477","url":"https://osv.dev/vulnerability/GO-2025-3477","summary":"S3-Proxy allows Reflected Cross-site Scripting (XSS) in template implementation in github.com/oxyno-zeta/s3-proxy","modified":"2026-03-03T04:56:16.848925Z","packages":[{"ecosystem":"Go","name":"github.com/oxyno-zeta/s3-proxy","purl":"pkg:golang/github.com/oxyno-zeta/s3-proxy","ranges":["<0.0.0-20250220214310-c611c741ed48"],"fixed":["0.0.0-20250220214310-c611c741ed48"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}