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CVE-2026-25882

Gofiber Fiber vulnerability

7.5 HIGHPublic exploitEPSS 0.81%
  1. Published24 Feb 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Gofiber Fiber≥ 2.0.0 < 2.52.12 · ≥ 3.0.0 < 3.1.0

Remediation

Fixed in
Gofiber Fiber≥ 2.52.12

References

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Frequently asked

Is CVE-2026-25882 being actively exploited?

CVE-2026-25882 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.81%.

How severe is CVE-2026-25882?

CVE-2026-25882 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.81% probability of exploitation.

Which products are affected by CVE-2026-25882?

Affected products include Gofiber Fiber.

How do I fix CVE-2026-25882?

Upgrade affected software to a fixed version, for example Gofiber Fiber 2.52.12 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-25882 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.