{"cve":"CVE-2026-53954","nvd":{"published":"2026-09-15T18:17:22.393","modified":"2026-09-30T17:51:56.193","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","score":4.3},"cwes":["CWE-400"],"references":["https://github.com/bugsink/bugsink/commit/1d0539fefcd1a796143d15d84053b1c0122ef8c7","https://github.com/bugsink/bugsink/commit/8dca571b9e66c535ed4885465db820824e7c491a","https://github.com/bugsink/bugsink/releases/tag/2.2.2","https://github.com/bugsink/bugsink/security/advisories/GHSA-5x67-j5xg-c5gj"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-53954","score":0.0056,"percentile":0.46358,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-5x67-j5xg-c5gj","url":"https://osv.dev/vulnerability/GHSA-5x67-j5xg-c5gj","summary":"Bugsink: DOS using large numbers of event tags","modified":"2026-07-13T16:42:33.790352007Z","packages":[{"ecosystem":"PyPI","name":"bugsink","purl":"pkg:pypi/bugsink","ranges":["<2.2.2"],"fixed":["2.2.2"]}]},{"id":"PYSEC-2026-2403","url":"https://osv.dev/vulnerability/PYSEC-2026-2403","summary":"Bugsink: DOS using large numbers of event tags","modified":"2026-07-13T16:31:39.074820265Z","packages":[{"ecosystem":"PyPI","name":"bugsink","purl":"pkg:pypi/bugsink","ranges":["<2.2.2"],"fixed":["2.2.2"]}]}],"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."]}