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7 vulnerabilities found for echo by labstack
CVE-2026-55677 (GCVE-0-2026-55677)
Vulnerability from cvelistv5 – Published: 2026-06-26 16:15 – Updated: 2026-06-26 16:50
VLAI
Title
Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/labstack/echo/security/advisor… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-25766 (GCVE-0-2026-25766)
Vulnerability from cvelistv5 – Published: 2026-02-19 15:49 – Updated: 2026-02-19 19:46
VLAI
Title
Echo has a Windows path traversal via backslash in middleware.Static default filesystem
Summary
Echo is a Go web framework. In versions 5.0.0 through 5.0.2 on Windows, Echo’s `middleware.Static` using the default filesystem allows path traversal via backslashes, enabling unauthenticated remote file read outside the static root. In `middleware/static.go`, the requested path is unescaped and normalized with `path.Clean` (URL semantics). `path.Clean` does not treat `\` as a path separator, so `..\` sequences remain in the cleaned path. The resulting path is then passed to `currentFS.Open(...)`. When the filesystem is left at the default (nil), Echo uses `defaultFS` which calls `os.Open` (`echo.go:792`). On Windows, `os.Open` treats `\` as a path separator and resolves `..\`, allowing traversal outside the static root. Version 5.0.3 fixes the issue.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/labstack/echo/security/advisor… | x_refsource_CONFIRM |
| https://github.com/labstack/echo/pull/2891 | x_refsource_MISC |
| https://github.com/labstack/echo/commit/b1d443086… | x_refsource_MISC |
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CVE-2020-36565 (GCVE-0-2020-36565)
Vulnerability from cvelistv5 – Published: 2022-12-07 16:14 – Updated: 2025-04-23 15:38
VLAI
Title
Directory traversal on Windows in github.com/labstack/echo/v4
Summary
Due to improper sanitization of user input on Windows, the static file handler allows for directory traversal, allowing an attacker to read files outside of the target directory that the server has permission to read.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE 22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| github.com/labstack/echo/v4 | github.com/labstack/echo/v4 |
Affected:
0 , < 4.1.18-0.20201215153152-4422e3b66b9f
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CVE-2022-40083 (GCVE-0-2022-40083)
Vulnerability from cvelistv5 – Published: 2022-09-28 13:34 – Updated: 2025-05-21 14:40
VLAI
Summary
Labstack Echo v4.8.0 was discovered to contain an open redirect vulnerability via the Static Handler component. This vulnerability can be leveraged by attackers to cause a Server-Side Request Forgery (SSRF).
Severity
9.6 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/labstack/echo/issues/2259 | x_refsource_MISC |
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CVE-2026-25766 (GCVE-0-2026-25766)
Vulnerability from nvd – Published: 2026-02-19 15:49 – Updated: 2026-02-19 19:46
VLAI
Title
Echo has a Windows path traversal via backslash in middleware.Static default filesystem
Summary
Echo is a Go web framework. In versions 5.0.0 through 5.0.2 on Windows, Echo’s `middleware.Static` using the default filesystem allows path traversal via backslashes, enabling unauthenticated remote file read outside the static root. In `middleware/static.go`, the requested path is unescaped and normalized with `path.Clean` (URL semantics). `path.Clean` does not treat `\` as a path separator, so `..\` sequences remain in the cleaned path. The resulting path is then passed to `currentFS.Open(...)`. When the filesystem is left at the default (nil), Echo uses `defaultFS` which calls `os.Open` (`echo.go:792`). On Windows, `os.Open` treats `\` as a path separator and resolves `..\`, allowing traversal outside the static root. Version 5.0.3 fixes the issue.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/labstack/echo/security/advisor… | x_refsource_CONFIRM |
| https://github.com/labstack/echo/pull/2891 | x_refsource_MISC |
| https://github.com/labstack/echo/commit/b1d443086… | x_refsource_MISC |
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CVE-2020-36565 (GCVE-0-2020-36565)
Vulnerability from nvd – Published: 2022-12-07 16:14 – Updated: 2025-04-23 15:38
VLAI
Title
Directory traversal on Windows in github.com/labstack/echo/v4
Summary
Due to improper sanitization of user input on Windows, the static file handler allows for directory traversal, allowing an attacker to read files outside of the target directory that the server has permission to read.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE 22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| github.com/labstack/echo/v4 | github.com/labstack/echo/v4 |
Affected:
0 , < 4.1.18-0.20201215153152-4422e3b66b9f
(semver)
|
Credits
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CVE-2022-40083 (GCVE-0-2022-40083)
Vulnerability from nvd – Published: 2022-09-28 13:34 – Updated: 2025-05-21 14:40
VLAI
Summary
Labstack Echo v4.8.0 was discovered to contain an open redirect vulnerability via the Static Handler component. This vulnerability can be leveraged by attackers to cause a Server-Side Request Forgery (SSRF).
Severity
9.6 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/labstack/echo/issues/2259 | x_refsource_MISC |
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