High severity · published May 22, 2025
CVE-2025-48075
Fiber panics when fiber.Ctx.BodyParser parses invalid range index
7.5
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
fiber · gofiber
>= 2.52.6, < 2.52.7 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-48075
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-48075
Patch
https://github.com/gofiber/fiber/commit/e115c08b8f059a4a031b492aa9eef0712411853d
Exploit
https://github.com/gofiber/fiber/security/advisories/GHSA-hg3g-gphw-5hhm
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