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Fencer Vulns
critical 9.6

CVE-2022-40083 json

Labstack Echo Open Redirect vulnerability

published 2022-09-28 4 y ago modified 2026-06-17 4 mo ago also GHSA-crxj-hrmp-4rwf , GO-2022-1031 , EUVD-2022-6783

cvss
9.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known, plus a Nuclei check

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).

Patch / fix

  • go github.com/labstack/echo/v4 4.9.0
  • golang-github-labstack-echo Debian 14, Debian 13 4.11.1-1

debian advisories DEBIAN-CVE-2022-40083

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
17 mo ago

Exploit prediction

3.24% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Labstack Echo 4.8.0 - Open Redirect nuclei detection template
  • github.com https://github.com/labstack/echo/issues/2259 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
NVD 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CNA 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
GitHub 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/labstack/echo/v4
<4.9.0
4.9.0

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.