Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gofiber | Fiber | >= 2.0.0, < 2.52.7 |
Related Weaknesses (CWE)
References
- https://github.com/gofiber/fiber/commit/e115c08b8f059a4a031b492aa9eef0712411853dPatch
- https://github.com/gofiber/fiber/security/advisories/GHSA-hg3g-gphw-5hhmExploitVendor Advisory
- https://github.com/gofiber/fiber/security/advisories/GHSA-hg3g-gphw-5hhmExploitVendor Advisory
FAQ
What is CVE-2025-48075?
CVE-2025-48075 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2025-48075?
CVE-2025-48075 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-48075?
Check the references section above for vendor advisories and patch information. Affected products include: Gofiber Fiber.