CVE-2026-55677 - Vulnerability Details - OpenCVE

Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable yes

Technical Impact partial

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq

History

Fri, 26 Jun 2026 17:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 26 Jun 2026 16:45:00 +0000

Type	Values Removed	Values Added
Description		Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0.
Title		Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files
Weaknesses		CWE-22
References		https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}`

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-06-26T16:15:55.633Z

Updated: 2026-06-26T16:50:57.019Z

Reserved: 2026-06-17T00:05:03.778Z

Link: CVE-2026-55677

Vulnrichment

Updated: 2026-06-26T16:50:28.048Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-06-26T17:30:05Z

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