CVE-2025-48075

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.

Reserved 2025-05-15 | Published 2025-05-22 | Updated 2025-05-22 | Assigner GitHub_M

Problem types

CWE-129: Improper Validation of Array Index

Product status

>= 2.52.6, < 2.52.7
affected

References

github.com/.../fiber/security/advisories/GHSA-hg3g-gphw-5hhm

github.com/...ommit/e115c08b8f059a4a031b492aa9eef0712411853d

cve.org (CVE-2025-48075)

nvd.nist.gov (CVE-2025-48075)

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