{"id":"CVE-2026-53954","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-53954","generatedAt":"2026-10-28T01:11:50.690Z","title":"Prior to version 2.2.2, Bugsink stores every set of custom tags supplied with an incoming event, allowing a caller with a valid project DSN to submit an unusually large tag set and force excessive tag-row writes.","description":"Bugsink is a self-hosted error tracking tool. Prior to version 2.2.2, Bugsink stores every set of custom tags supplied with an incoming event, allowing a caller with a valid project DSN to submit an unusually large tag set and force excessive tag-row writes. Because Bugsink uses a single-writer database architecture, the expensive write transaction delays digestion of other events and causes a temporary ingestion denial of service. Version 2.2.2 applies the configurable MAX_EVENT_TAGS limit before storage. The impact is limited to availability for an instance accepting the event and does not expose stored data, modify existing events, or allow code execution. This issue is fixed in version 2.2.2.","published":"2026-09-15T18:17:22.000Z","lastModified":"2026-09-30T17:51:56.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},"cwe":["CWE-400"],"affected":[],"epss":{"score":0.0056,"percentile":0.46375,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.56%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/bugsink/bugsink/commit/1d0539fefcd1a796143d15d84053b1c0122ef8c7","source":"security-advisories@github.com"},{"url":"https://github.com/bugsink/bugsink/commit/8dca571b9e66c535ed4885465db820824e7c491a","source":"security-advisories@github.com"},{"url":"https://github.com/bugsink/bugsink/releases/tag/2.2.2","source":"security-advisories@github.com"},{"url":"https://github.com/bugsink/bugsink/security/advisories/GHSA-5x67-j5xg-c5gj","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53954","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}