{"cve":"CVE-2026-40972","nvd":{"published":"2026-04-28T00:16:24.210","modified":"2026-07-24T21:10:00.143","status":"Analyzed","description":"An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploading changed classes, thereby achieving remote code execution in the remote application.\n\nAffected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); DevTools remote secret comparison. Versions that are no longer supported are also affected per vendor advisory.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-208"],"references":["https://spring.io/security/cve-2026-40972"],"products":["vmware:spring_boot"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-40972","score":0.00262,"percentile":0.18055,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-56v8-86gj-66jp","url":"https://osv.dev/vulnerability/GHSA-56v8-86gj-66jp","summary":"Spring Boot DevTools remote secret comparison is vulnerable to timing attacks","modified":"2026-05-06T19:26:28.614099Z","packages":[{"ecosystem":"Maven","name":"org.springframework.boot:spring-boot-devtools","purl":"pkg:maven/org.springframework.boot/spring-boot-devtools","ranges":[">=4.0.0 <4.0.6"],"fixed":["4.0.6"]},{"ecosystem":"Maven","name":"org.springframework.boot:spring-boot-devtools","purl":"pkg:maven/org.springframework.boot/spring-boot-devtools","ranges":[">=3.5.0 <3.5.14"],"fixed":["3.5.14"]},{"ecosystem":"Maven","name":"org.springframework.boot:spring-boot-devtools","purl":"pkg:maven/org.springframework.boot/spring-boot-devtools","ranges":[">=3.4.0 <=3.4.15"],"fixed":[]},{"ecosystem":"Maven","name":"org.springframework.boot:spring-boot-devtools","purl":"pkg:maven/org.springframework.boot/spring-boot-devtools","ranges":[">=3.3.0 <=3.3.18"],"fixed":[]},{"ecosystem":"Maven","name":"org.springframework.boot:spring-boot-devtools","purl":"pkg:maven/org.springframework.boot/spring-boot-devtools","ranges":["<=2.7.32"],"fixed":[]}]}],"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."]}