Critical severity · published Sep 28, 2022
CVE-2022-40083
Labstack Echo v4.8.0 was discovered to contain an open redirect vulnerability via the Static Handler component
9.6
CVSS
3.2%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EC
Echo · Labstack
4.8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-40083
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-40083
Exploit
https://github.com/labstack/echo/issues/2259
More from Echo
9.1
CVE-2026-118264
Echo: Rejected WebSocket upgrades can bypass Echo route-level access controls
8.2
CVE-2026-118262
Echo: WebSocket proxy can retain connections and handlers after client disconnect
8.2
CVE-2026-118261
Echo: Decompress permits unbounded gzip expansion in v4
8.2
CVE-2026-118260
Echo: BodyDump captures request and response bodies without size limits in v4
7.5
CVE-2026-118650
Echo: middleware.Static: `%2F`-encoded path bypasses route/group middleware guarding a statically-served path
