CVE-2025-48075 – Fiber panics when fiber.Ctx.BodyParser parses invalid range index

https://notcve.org/view.php?id=CVE-2025-48075

22 May 2025 — Fiber is an Express-inspired web framework written in Go. Starting in version 2.52.6 and prior to version 2.52.7, `fiber.Ctx.BodyParser` can map flat data to nested slices using `key[idx]value` syntax, but when idx is negative, it causes a panic instead of returning an error stating it cannot process the data. Since this data is user-provided, this could lead to denial of service for anyone relying on this `fiber.Ctx.BodyParser` functionality. Version 2.52.7 fixes the issue. • https://github.com/gofiber/fiber/commit/e115c08b8f059a4a031b492aa9eef0712411853d • CWE-129: Improper Validation of Array Index •