CVE-2026-55677 Common Vulnerabilities and Exposures

Upstream information

CVE-2026-55677 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail	CNA (GitHub)	SUSE
Base Score	7.5	7.5
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector	Network	Network
Attack Complexity	Low	Low
Privileges Required	None	None
User Interaction	None	None
Scope	Unchanged	Unchanged
Confidentiality Impact	High	High
Integrity Impact	None	None
Availability Impact	None	None
CVSSv3 Version	3.1	3.1

No SUSE Bugzilla entries cross referenced.

SUSE Security Advisories:

RHSA-2026:57541, published Fri Aug 28 15:07:40 UTC 2026
RHSA-2026:66432, published Tue Sep 15 15:07:50 UTC 2026
SUSE-SU-2026:23625-1, published 2026-09-04T12:30:23Z

List of released packages

Product(s)	Fixed package version(s)	References
SUSE Liberty Linux 10	`osbuild-composer >= 165.1-5.el10_2` `osbuild-composer-core >= 165.1-5.el10_2` `osbuild-composer-worker >= 165.1-5.el10_2`	Patchnames: RHSA-2026:66432 (x86_64)
SUSE Liberty Linux 9.6 EMS	`osbuild-composer >= 132.2-10.el9_6` `osbuild-composer-core >= 132.2-10.el9_6` `osbuild-composer-worker >= 132.2-10.el9_6`	Patchnames: RHSA-2026:57541 (x86_64)

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s)	Source package	State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Server 16.2	govulncheck-vulndb	Affected

SUSE Timeline for this CVE

CVE page created: Thu Aug 27 21:08:19 2026
CVE page last modified: Sun Oct 11 16:02:43 2026