CVE-2023-27491
- Source
- https://cve.org/CVERecord?id=CVE-2023-27491
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-27491.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-27491
- Aliases
-
- BIT-envoy-2023-27491
- GHSA-5jmv-cw9p-f9rp
- Published
- 2023-04-04T18:18:23.433Z
- Modified
- 2026-07-15T01:49:03.030646485Z
- Severity
-
- 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- Envoy forwards invalid Http2/Http3 downstream headers
- Details
-
Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9.
- Database specific
{ "cwe_ids": [ "CWE-20" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/27xxx/CVE-2023-27491.json" }- References
-
- https://datatracker.ietf.org/doc/html/rfc9113#section-8.3
- https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1
- https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/27xxx/CVE-2023-27491.json
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp
- https://nvd.nist.gov/vuln/detail/CVE-2023-27491
Affected packages
Git / github.com/envoyproxy/envoy
Affected ranges
- Type
- GIT
- Repo
- https://github.com/envoyproxy/envoy
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixedIntroducedFixedIntroducedFixed
- Database specific
{ "extracted_events": [ { "introduced": "0" }, { "fixed": "1.22.9" }, { "introduced": "1.23.0" }, { "fixed": "1.23.6" }, { "introduced": "1.24.0" }, { "fixed": "1.24.4" }, { "introduced": "1.25.0" }, { "fixed": "1.25.3" } ], "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "source": "CPE_RANGE" }
Affected versions
v1.*
v1.0.0
v1.1.0
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.16.0
v1.17.0
v1.18.0
v1.18.1
v1.18.2
v1.19.0
v1.2.0
v1.20.0
v1.21.0
v1.22.0
v1.22.2
v1.22.3
v1.22.4
v1.22.5
v1.22.6
v1.22.7
v1.22.8
v1.23.0
v1.23.1
v1.23.2
v1.23.3
v1.23.4
v1.23.5
v1.24.0
v1.24.1
v1.24.2
v1.24.3
v1.25.0
v1.25.1
v1.25.2
v1.3.0
v1.4.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.9.0