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TI-2025-30446 Aliases CVE-2025-48075GHSA-hg3g-gphw-5hhm

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

Priority HIGH 73CWE-129Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-129 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00528 44th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed fiber (gofiber): 2.52.7github.com/gofiber/fiber/v2 (Go): 2.52.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
gofiberfiber2.52.6 to before 2.52.72.52.7Patch availableCNA
—github.com/gofiber/fiber/v2 (Go)2.52.6 to before 2.52.72.52.7Patch availableGHSA-hg3g-gphw-5hhm
  • fiber Vendorgofiber Affected 2.52.6 to before 2.52.7 Fixed in 2.52.7 Patch available CNA
  • github.com/gofiber/fiber/v2 (Go) Vendor— Affected 2.52.6 to before 2.52.7 Fixed in 2.52.7 Patch available GHSA-hg3g-gphw-5hhm

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*2.0.0 to before 2.52.7Vulnerablegofiber
  • cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:* Versions 2.0.0 to before 2.52.7 Vulnerable ·gofiber

Remediation

  • Fix · CNA fiber (gofiber) Fixed in 2.52.7
  • Fix · GHSA-hg3g-gphw-5hhm github.com/gofiber/fiber/v2 (Go) Fixed in 2.52.7 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-48075
  2. 2026-10-03 Alias added: GHSA-hg3g-gphw-5hhm

References

Exploit 1

Patch 1

Advisory 1

Other 2

  • TI-2025-34555 Fiber Susceptible to Crash via `BodyParser` Due to Unvalidated Large Slice Index in Decoder CVSS 4.0HIGH 8.7
  • TI-2024-16578 Fiber has Insecure CORS Configuration, Allowing Wildcard Origin with Credentials CVSS 3.1CRITICAL 9.8
  • TI-2026-23477 github.com/gofiber/fiber/v3 cache middleware can mix responses across query parameters CVSS 3.1MEDIUM 6.5
  • TI-2026-20922 Fiber has a Denial of Service Vulnerability via Route Parameter Overflow CVSS 4.0MEDIUM 5.5
  • TI-2026-30834 Fiber: XSS in AutoFormat Content Negotiation CVSS 4.0MEDIUM 5.3
  • TI-2026-38670 Fiber: HSTS header never set in helmet middleware due to incorrect protocol check CVSS 3.1MEDIUM 4.8
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences