CVE-2025-48075

Fiber panics when fiber.Ctx.BodyParser parses invalid range index

Severity Score

7.7

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

None

Integrity

None

Availability

High

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2025-05-15 CVE Reserved
2025-05-22 CVE Published
2025-05-22 CVE Updated
2025-05-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-129: Improper Validation of Array Index

CAPEC

References (2)

URL	Tag	Source
https://github.com/gofiber/fiber/commit/e115c08b8f059a4a031b492aa9eef0712411853d	X_refsource_misc
https://github.com/gofiber/fiber/security/advisories/GHSA-hg3g-gphw-5hhm	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gofiber Search vendor "Gofiber"		Fiber Search vendor "Gofiber" for product "Fiber"				>= 2.52.6 < 2.52.7 Search vendor "Gofiber" for product "Fiber" and version " >= 2.52.6 < 2.52.7"		en		Affected