CVE-2026-55677

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Source
https://cve.org/CVERecord?id=CVE-2026-55677
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55677.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55677
Aliases
  • GHSA-vfp3-v2gw-7wfq
Downstream
Published
2026-06-26T16:15:55.633Z
Modified
2026-07-08T08:12:41.300113736Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55677.json",
    "cwe_ids": [
        "CWE-22"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/labstack/echo

Affected ranges

Type
GIT
Repo
https://github.com/labstack/echo
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8800212ad4392d3f5af052f3042aca62cc5911a7
Introduced
9500f2745481e2dff1313e2e6734c488e80c13fb
Fixed
5786024ea4d85c01784796e8aa7aac53e007b39b
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.15.3"
        },
        {
            "introduced": "5.0.0"
        },
        {
            "fixed": "5.2.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

2.*
2.0.0-alpha
3.*
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
3.3.0
3.3.1
3.3.2
3.3.3
3.3.4
v0.*
v0.0.10
v0.0.11
v0.0.12
v0.0.13
v0.0.14
v0.0.15
v0.0.16
v0.0.2
v0.0.4
v0.0.5
v0.0.6
v0.0.7
v0.0.8
v0.0.9
v1.*
v1.0.0
v1.1.0
v1.2.0
v1.3
v2.*
v2.0.0
v2.0.0-apha.1
v2.0.0-apha.2
v2.0.0-apha1
v2.0.0-beta.1
v2.0.0-beta.2
v2.0.1
v2.0.2
v3.*
v3.0.0
v3.0.0-beta.1
v3.0.0-beta.2
v3.0.1
v3.0.2
v3.0.3
v3.1.0
v3.1.0-rc.1
v3.2.0
v3.2.1
v3.2.2
v3.2.3
v3.2.4
v3.2.5
v3.2.6
v3.3.0
v3.3.1
v3.3.10
v3.3.2
v3.3.3
v3.3.4
v3.3.5-retag
v3.3.6-retag
v3.3.7-retag
v3.3.8-retag
v3.3.9
v4.*
v4.0.0
v4.1.0
v4.1.1
v4.1.10
v4.1.11
v4.1.12
v4.1.13
v4.1.14
v4.1.15
v4.1.16
v4.1.17
v4.1.2
v4.1.3
v4.1.4
v4.1.5
v4.1.6
v4.1.7
v4.1.8
v4.1.9
v4.10.0
v4.10.1
v4.10.2
v4.11.0
v4.11.1
v4.11.2
v4.11.3
v4.11.4
v4.12.0
v4.13.0
v4.13.1
v4.13.2
v4.13.3
v4.13.4
v4.14.0
v4.15.0
v4.15.1
v4.15.2
v4.2.0
v4.2.1
v4.2.2
v4.3.0
v4.4.0
v4.5.0
v4.6.0
v4.6.1
v4.6.2
v4.7.0
v4.7.1
v4.7.2
v4.8.0
v4.9.0
v4.9.1
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v5.1.0
v5.1.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55677.json"