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Advisory record · GHSA-hg3g-gphw-5hhm

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

CVSS 7.7 HighEPSS 0.0053 · 44th percentile

Published by the GitHub Advisory Database at 22 May 2025, 20:08 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/gofiber/fiber/v2Go>=2.52.6, <2.52.72.52.7
Identifiers
GHSA-hg3g-gphw-5hhm · CVE-2025-48075 · GO-2025-3706
Weakness (CWE)
CWE-129
Tags
Published
22 May 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Fiber (github.com/gofiber/fiber/v2) versions 2.52.6 up to but not including 2.52.7 panic when fiber.Ctx.BodyParser parses a struct with range values and receives a negative range index. An attacker who can send a crafted request body to an affected endpoint can crash the server, causing denial of service. Upgrade to Fiber 2.52.7. The source gives few details about other conditions.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0053, the 44th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:14 UTC First seen by agentprime
  2. 31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.