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CVE-2026-25882

Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber…

CVSS 4.0 · [email protected] · Secondary 5.5 MEDIUMCVSS 3.1 · [email protected] · Primary 7.5 HIGHCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 25 Oct 2026 06:17:16 UTC. Read the latest advisory.

nvd · CVE-2026-25882

Published

Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber v2 and v3 that allows remote attackers to crash the application by sending requests to routes with more than 30 parameters. The vulnerability results from missing validation during route registration combined with an unbounded array write during request matching. Version 2.52.12 patches the issue in the v2 branch and 3.1.0 patches the issue in the v3 branch.

Read the publisher's advisory

Affected versions, risk and source history

nvd · CVE-2026-25882

Published

Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber v2 and v3 that allows remote attackers to crash the application by sending requests to routes with more than 30 parameters. The vuln…

Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber v2 and v3 that allows remote attackers to crash the application by sending requests to routes with more than 30 parameters. The vulnerability results from missing validation during route registration combined with an unbounded array write during request matching. Version 2.52.12 patches the issue in the v2 branch and 3.1.0 patches the issue in the v3 branch.

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-129

Original publisher date fields

published: 2026-02-24T21:16:29.640

lastModified: 2026-06-17T10:25:22.483

1 source CPE criteria · context only
  • cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published
24 Feb 2026 21:16:29 UTC
Source modified
17 Jun 2026 10:25:22 UTC
Saved here
25 Oct 2026 06:17:16 UTC
Source terms
NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 5.5 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Primary · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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Sources read 15 Nov 16:58 UTC · 254 of 275 readable · 250 fully read · documentation 469/469 current

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