CVE-2026-118656: Golang github labstack echo.v2 · Echo is a Go web framework
Affects golang-github-labstack-echo.v2Source GCVE Database
Not known to be exploited · CVSS 6.1 Medium · fixed in 4.16.0 : update golang-github-labstack-echo.v2 when convenient.
Data as of 5 Nov 2026, 12:35 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 6.1 |
|---|
- Patch
- Available – fixed in 4.16.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10golang-github-labstack-echopkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSgolang-github-labstack-echopkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSgolang-github-labstack-echopkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSgolang-github-labstack-echopkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSgolang-github-labstack-echo.v2pkg:deb/ubuntu/golang-github-labstack-echo.v2?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSgolang-github-labstack-echo.v3pkg:deb/ubuntu/golang-github-labstack-echo.v3?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, sanitizeURI checks only the first two bytes of a redirect target before deciding whether it begins with an absolute-path separator pair. When AddTrailingSlash or RemoveTrailingSlash is configured with a redirect status, a slash, TAB, separator path form can evade the guard, be emitted in the Location header, and be normalized by a browser into an attacker-controlled host. This issue is fixed in 4.16.0 and 5.4.0.
References
- ubuntu.com/security/CVE-2026-118656 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-118656 (opens in a new tab)
- github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1 (opens in a new tab)
- github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af (opens in a new tab)
- github.com/labstack/echo/releases/tag/v4.16.0 (opens in a new tab)
- github.com/labstack/echo/releases/tag/v5.4.0 (opens in a new tab)
- github.com/labstack/echo/security/advisories/GHSA-v753-g4cw-jm48 (opens in a new tab)