CVE-2026-119285

תיאור (מקור, אנגלית)

Fiber is an Express inspired web framework written in Go. From 2.52.1 until 2.52.3, the CORS middleware's validateDomain wildcard matcher in middleware/cors/utils.go strips the scheme and checks only a host suffix without requiring a dot boundary. An application configured with a wildcard-subdomain AllowOrigins value and AllowCredentials enabled can reflect an unrelated attacker-controlled origin whose host merely ends with the configured base domain. A user who visits that origin can expose authenticated cross-origin responses to the attacker's page; empty-label origins and later comma-space parsing hardening are outside this advisory. This issue is fixed in version 2.52.3.

מדדים

CVSS 3.1

5.9 (MEDIUM) מקור הציון: CNA CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N

EPSS — סבירות ניצול

0% (אחוזון 2) נכון ל-1 בנובמבר 2026

CWE

CWE-346, CWE-942

קישורים

• https://github.com/gofiber/fiber/commit/1aac6f618b6bd3e159d2449acb4232a2170b976b
• https://github.com/gofiber/fiber/pull/2915
• https://github.com/gofiber/fiber/releases/tag/v2.52.3
• https://github.com/gofiber/fiber/security/advisories/GHSA-g5jq-qmqr-qrwf