{"cve":"CVE-2026-108602","nvd":{"published":"2026-10-10T20:16:32.650","modified":"2026-10-18T12:16:57.803","status":"Deferred","description":"Helicone through v2025.08.21-1 contains a server-side request forgery vulnerability in the Jawn webhook sender that allows authenticated organization users to reach internal services by using hostnames resolving to private addresses. Attackers can create webhooks with public hostnames that resolve or DNS-rebind to loopback or internal addresses, causing blind POST requests to internal HTTPS services.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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:N/I:L/A:N","score":4.3},"cwes":["CWE-918"],"references":["https://github.com/Helicone/helicone","https://github.com/Helicone/helicone/blob/067d9290acb4f1fc9320e902fc67b4b399b50363/valhalla/jawn/src/controllers/public/webhookController.ts#L64-L85","https://github.com/Helicone/helicone/blob/067d9290acb4f1fc9320e902fc67b4b399b50363/valhalla/jawn/src/lib/clients/webhookSender.ts#L11-L76","https://hackmd.io/@haind/helicone-webhook-dns-ssrf","https://www.vulncheck.com/advisories/helicone-through-2025.08.21-1-ssrf-via-jawn-webhook-sender-dns-resolution"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-108602","score":0.00213,"percentile":0.11504,"date":"2026-10-25"},"kev":null,"osv":[],"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."]}