{"cve":"CVE-2026-44502","nvd":{"published":"2026-05-26T17:16:46.387","modified":"2026-07-24T11:10:00.170","status":"Deferred","description":"Bugsink is a self-hosted error tracking tool. Prior to 2.1.3, Bugsink’s webhook URL validation could be (partially) bypassed because of a mismatch in URL parsing. The original validation logic parsed webhook URLs with Python’s urllib.parse.urlparse, then sent the request with requests.post. For malformed inputs involving backslashes and @, those components can disagree about where the authority ends and which hostname is the real target. A URL may therefore appear to target an allowlisted public hostname during validation, while the HTTP client actually connects to a different host. This vulnerability is fixed in 2.1.3.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-918"],"references":["https://github.com/bugsink/bugsink/commit/940d2df635e06803ef658666d734306942db5cc7","https://github.com/bugsink/bugsink/releases/tag/2.1.3","https://github.com/bugsink/bugsink/security/advisories/GHSA-fp53-qcf8-2xx2"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-44502","score":0.00286,"percentile":0.21206,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-fp53-qcf8-2xx2","url":"https://osv.dev/vulnerability/GHSA-fp53-qcf8-2xx2","summary":"Bunsink has an SSRF bypass in `validate_webhook_url`","modified":"2026-07-13T16:42:38.834088162Z","packages":[{"ecosystem":"PyPI","name":"bugsink","purl":"pkg:pypi/bugsink","ranges":["<2.1.3"],"fixed":["2.1.3"]}]},{"id":"PYSEC-2026-2405","url":"https://osv.dev/vulnerability/PYSEC-2026-2405","summary":"Bunsink has an SSRF bypass in `validate_webhook_url`","modified":"2026-07-13T16:31:39.667326037Z","packages":[{"ecosystem":"PyPI","name":"bugsink","purl":"pkg:pypi/bugsink","ranges":["<2.1.3"],"fixed":["2.1.3"]}]}],"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."]}