{"cve":"CVE-2018-8023","nvd":{"published":"2018-09-21T13:29:01.140","modified":"2026-06-17T02:04:06.860","status":"Modified","description":"Apache Mesos can be configured to require authentication to call the Executor HTTP API using JSON Web Token (JWT). In Apache Mesos versions pre-1.4.2, 1.5.0, 1.5.1, 1.6.0 the comparison of the generated HMAC value against the provided signature in the JWT implementation used is vulnerable to a timing attack because instead of a constant-time string comparison routine a standard `==` operator has been used. A malicious actor can therefore abuse the timing difference of when the JWT validation function returns to reveal the correct HMAC value.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-200"],"references":["https://lists.apache.org/thread.html/9b9d3f6bd09f3ebd2284b82077033bdc71da550a1c4c010c2494acc3%40%3Cdev.mesos.apache.org%3E","https://lists.apache.org/thread.html/r0dd7ff197b2e3bdd80a0326587ca3d0c22e10d1dba17c769d6da7d7a%40%3Cuser.flink.apache.org%3E","https://lists.apache.org/thread.html/9b9d3f6bd09f3ebd2284b82077033bdc71da550a1c4c010c2494acc3%40%3Cdev.mesos.apache.org%3E","https://lists.apache.org/thread.html/r0dd7ff197b2e3bdd80a0326587ca3d0c22e10d1dba17c769d6da7d7a%40%3Cuser.flink.apache.org%3E"],"products":["apache:mesos"],"source":"nvd","synced_at":"2026-10-19T20:53:14.491561039+00:00"},"epss":{"cve":"CVE-2018-8023","score":0.03056,"percentile":0.8759,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c8cc-p3j7-4c7f","url":"https://osv.dev/vulnerability/GHSA-c8cc-p3j7-4c7f","summary":"Moderate severity vulnerability that affects org.apache.mesos:mesos","modified":"2023-11-08T04:00:24.364977Z","packages":[{"ecosystem":"Maven","name":"org.apache.mesos:mesos","purl":"pkg:maven/org.apache.mesos/mesos","ranges":["<1.4.2"],"fixed":["1.4.2"]},{"ecosystem":"Maven","name":"org.apache.mesos:mesos","purl":"pkg:maven/org.apache.mesos/mesos","ranges":[">=1.5.0 <1.5.2"],"fixed":["1.5.2"]},{"ecosystem":"Maven","name":"org.apache.mesos:mesos","purl":"pkg:maven/org.apache.mesos/mesos","ranges":[">=1.6.0 <1.6.1"],"fixed":["1.6.1"]}]}],"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."]}