{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93955","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-09-19T08:51:16.505Z","datePublished":"2026-09-19T22:15:09.092Z","dateUpdated":"2026-09-21T20:20:23.567Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-09-19T22:15:09.092Z"},"title":"grimmory-tools grimmory Download Endpoint KoboController.java streamFileToResponse authorization","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-639","lang":"en","description":"Authorization Bypass"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-285","lang":"en","description":"Improper Authorization"}]}],"affected":[{"vendor":"grimmory-tools","product":"grimmory","versions":[{"version":"3.3.0","status":"affected"},{"version":"3.3.1","status":"affected"},{"version":"3.3.2","status":"affected"},{"version":"3.3.3","status":"affected"},{"version":"3.4.0","status":"affected"},{"version":"3.4.1","status":"affected"}],"cpes":["cpe:2.3:a:grimmory-tools:grimmory:*:*:*:*:*:*:*:*"],"modules":["Download Endpoint"]}],"descriptions":[{"lang":"en","value":"A vulnerability was detected in grimmory-tools grimmory up to 3.3.3/3.4.1. Affected by this vulnerability is the function streamFileToResponse of the file backend/src/main/java/org/booklore/controller/KoboController.java of the component Download Endpoint. Performing a manipulation of the argument bookId results in authorization bypass. The attack may be initiated remotely. The exploit is now public and may be used. Issue #2431 is closed as completed, but its only comment states that the issue “has already been reported elsewhere.” No fixing commit or pull request is identified there."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":4.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":4.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":4,"vectorString":"AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:C"}}],"timeline":[{"time":"2026-09-19T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-09-19T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-09-19T10:56:27.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"summmm (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}],"references":[{"url":"https://vuldb.com/vuln/407914","name":"VDB-407914 | grimmory-tools grimmory Download Endpoint KoboController.java streamFileToResponse authorization","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/407914/cti","name":"VDB-407914 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-93955","name":"CVE-2026-93955 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/943921","name":"Submit #943921 | grimmory-tools grimmory 3.3.3 Incorrect Access Control","tags":["third-party-advisory"]},{"url":"https://github.com/grimmory-tools/grimmory/issues/2431","tags":["exploit","issue-tracking"]},{"url":"https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858","tags":["issue-tracking"]},{"url":"https://github.com/grimmory-tools/grimmory/","tags":["product"]}],"x_generator":["VulDB PVTS v202609"]},"adp":[{"references":[{"url":"https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-21T20:12:51.031460Z","id":"CVE-2026-93955","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-21T20:20:23.567Z"}}]}}