{"cve":"CVE-2023-34036","nvd":{"published":"2023-07-17T11:15:09.480","modified":"2026-06-17T06:02:46.287","status":"Modified","description":"Reactive web applications that use Spring HATEOAS to produce hypermedia-based responses might be exposed to malicious forwarded headers if they are not behind a trusted proxy that ensures correctness of such headers, or if they don't have anything else in place to handle (and possibly discard) forwarded headers either in WebFlux or at the level of the underlying HTTP server.\n\nFor the application to be affected, it needs to satisfy the following requirements:\n\n  *  It needs to use the reactive web stack (Spring WebFlux) and Spring HATEOAS to create links in hypermedia-based responses.\n  *  The application infrastructure does not guard against clients submitting (X-)Forwarded… headers.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-116","CWE-644"],"references":["https://spring.io/security/cve-2023-34036","https://spring.io/security/cve-2023-34036"],"products":["vmware:spring_hateoas"],"source":"nvd","synced_at":"2026-10-19T21:38:35.729974749+00:00"},"epss":{"cve":"CVE-2023-34036","score":0.00475,"percentile":0.41066,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-7m5c-fgwf-mwph","url":"https://osv.dev/vulnerability/GHSA-7m5c-fgwf-mwph","summary":"Spring HATEOAS vulnerable to Improper Neutralization of HTTP Headers for Scripting Syntax","modified":"2024-02-16T08:15:52.958371Z","packages":[{"ecosystem":"Maven","name":"org.springframework.hateoas:spring-hateoas","purl":"pkg:maven/org.springframework.hateoas/spring-hateoas","ranges":["<1.5.5"],"fixed":["1.5.5"]},{"ecosystem":"Maven","name":"org.springframework.hateoas:spring-hateoas","purl":"pkg:maven/org.springframework.hateoas/spring-hateoas","ranges":[">=2.0.0 <2.0.5"],"fixed":["2.0.5"]},{"ecosystem":"Maven","name":"org.springframework.hateoas:spring-hateoas","purl":"pkg:maven/org.springframework.hateoas/spring-hateoas","ranges":[">=2.1.0 <2.1.1"],"fixed":["2.1.1"]}]}],"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."]}