{"cve":"CVE-2026-76239","nvd":{"published":"2026-08-19T14:17:56.157","modified":"2026-10-24T13:10:00.147","status":"Deferred","description":"Stigmem before 0.9.0a11 fails to validate the delivery_address parameter when creating webhook subscriptions, allowing authenticated users to specify internal loopback and private network destinations. Attackers can trigger matching fact-change events to cause the Stigmem server to issue server-side HTTP POST requests to internal services, enabling blind SSRF attacks against localhost and private network endpoints.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","score":6.3},"cwes":["CWE-918"],"references":["https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-5p3m-vhh6-9236","https://www.vulncheck.com/advisories/stigmem-before-0a11-ssrf-via-unvalidated-webhook-delivery-address","https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-5p3m-vhh6-9236"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-76239","score":0.00324,"percentile":0.25214,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-5p3m-vhh6-9236","url":"https://osv.dev/vulnerability/GHSA-5p3m-vhh6-9236","summary":"stigmem-node has blind SSRF via unvalidated webhook subscription delivery_address","modified":"2026-08-20T18:45:13.462126527Z","packages":[{"ecosystem":"PyPI","name":"stigmem-node","purl":"pkg:pypi/stigmem-node","ranges":["<0.9.0a11"],"fixed":["0.9.0a11"]}]}],"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."]}