{"cve":"CVE-2024-24823","nvd":{"published":"2024-02-07T18:15:54.870","modified":"2026-06-17T07:14:57.523","status":"Modified","description":"Graylog is a free and open log management platform. Starting in version 4.3.0 and prior to versions 5.1.11 and 5.2.4, reauthenticating with an existing session cookie would re-use that session id, even if for different user credentials. In this case, the pre-existing session could be used to gain elevated access to an existing Graylog login session, provided the malicious user could successfully inject their session cookie into someone else's browser. The complexity of such an attack is high, because it requires presenting a spoofed login screen and injection of a session cookie into an existing browser, potentially through a cross-site scripting attack. No such attack has been discovered. Graylog 5.1.11 and 5.2.4, and any versions of the 6.0 development branch, contain patches to not re-use sessions under any circumstances. Some workarounds are available. Using short session expiration and explicit log outs of unused sessions can help limiting the attack vector. Unpatched this vulnerability exists, but is relatively hard to exploit. A proxy could be leveraged to clear the `authentication` cookie for the Graylog server URL for the `/api/system/sessions` endpoint, as that is the only one vulnerable.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","score":4.4},"cwes":["CWE-384"],"references":["https://github.com/Graylog2/graylog2-server/commit/1596b749db86368ba476662f23a0f0c5ec2b5097","https://github.com/Graylog2/graylog2-server/commit/b93a66353f35a94a4e8f3f75ac4f5cdc5a2d4a6a","https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-3xf8-g8gr-g7rh","https://github.com/Graylog2/graylog2-server/commit/1596b749db86368ba476662f23a0f0c5ec2b5097","https://github.com/Graylog2/graylog2-server/commit/b93a66353f35a94a4e8f3f75ac4f5cdc5a2d4a6a"],"products":["graylog:graylog"],"source":"nvd","synced_at":"2026-10-19T21:44:57.175229480+00:00"},"epss":{"cve":"CVE-2024-24823","score":0.00414,"percentile":0.35715,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3xf8-g8gr-g7rh","url":"https://osv.dev/vulnerability/GHSA-3xf8-g8gr-g7rh","summary":"Graylog session fixation vulnerability through cookie injection","modified":"2026-09-10T03:50:05.341740915Z","packages":[{"ecosystem":"Maven","name":"org.graylog2:graylog2-server","purl":"pkg:maven/org.graylog2/graylog2-server","ranges":[">=4.3.0 <5.1.11"],"fixed":["5.1.11"]},{"ecosystem":"Maven","name":"org.graylog2:graylog2-server","purl":"pkg:maven/org.graylog2/graylog2-server","ranges":[">=5.2.0-alpha.1 <5.2.4"],"fixed":["5.2.4"]}]}],"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."]}