CVE catalog
CVE-2026-55677
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),
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.43% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-github-labstack-echo | sid | 4.12.0-1 | vulnerable |
| Debian | golang-github-labstack-echo | forky | 4.12.0-1 | vulnerable |
| Debian | golang-github-labstack-echo | trixie | 4.12.0-1 | vulnerable |
| Debian | golang-github-labstack-echo | bookworm | 4.2.1-3 | vulnerable |
| Cpe | golang-github-labstack-echo | Not reported | Not reported | vulnerable |
| Go | github.com/labstack/echo/v5 | Not reported | 5.2.0 | fixed |
| Go | github.com/labstack/echo/v4 | Not reported | 4.15.3 | fixed |
| Go | github.com/labstack/echo | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-github-labstack-echo | source | sid | (unfixed) | not yet assigned | Not reported | [1141444] |
| Debian | golang-github-labstack-echo | source | forky | (unfixed) | not yet assigned | Not reported | [1141444] |
| Debian | golang-github-labstack-echo | source | trixie | (unfixed) | not yet assigned | Not reported | [1141444] |
| Debian | golang-github-labstack-echo | source | bookworm | (unfixed) | not yet assigned | Not reported | [1141444] |
| Go | github.com/labstack/echo/v5 | go | Not reported | 5.2.0 | Not reported | GHSA-VFP3-V2GW-7WFQ | Not reported |
| Go | github.com/labstack/echo/v4 | go | Not reported | 4.15.3 | Not reported | GHSA-VFP3-V2GW-7WFQ | Not reported |
Notes
[trixie] golang-github-labstack-echo: Minor issue [bookworm] golang-github-labstack-echo: Minor issue; encoded-slash %2F static route bypass
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [golang-github-labstack-echo-dev]Affected
Source package: [golang-github-labstack-echo]
Details (2)
4.2.1-3· all · bookwormAffected
nvd · golang-github-labstack-echo · debian · bookworm; nvd · golang-github-labstack-echo · debian · 12
4.2.1-3· all · bookwormAffected
nvd · golang-github-labstack-echo · debian · bookworm; nvd · golang-github-labstack-echo · debian · 12
[Debian 13 (Trixie)]
- [golang-github-labstack-echo-dev]Affected
Source package: [golang-github-labstack-echo]
Details (2)
4.12.0-1· all · trixieAffected
nvd · golang-github-labstack-echo · debian · 13
4.12.0-1· all · trixieAffected
nvd · golang-github-labstack-echo · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2026_57541.json]
- [https://github.com/advisories/GHSA-vfp3-v2gw-7wfq]
- [https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-55677]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-55677]
- [https://security-tracker.debian.org/tracker/CVE-2026-55677]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55677.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]