CVE-2026-37236

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Source
https://cve.org/CVERecord?id=CVE-2026-37236
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-37236.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-37236
Downstream
Published
2026-08-28T00:00:00Z
Modified
2026-09-03T03:48:20.130270065Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

grpc-gateway v2.28.0 is vulnerable to Incorrect Access Control. The application processes the X-HTTP-Method-Override header in ServeMux.ServeHTTP without restricting allowed methods. When a POST request with Content-Type application/x-www-form-urlencoded includes this header, the request method is rewritten to an arbitrary attacker-supplied value before routing. This allows bypassing method-based access controls enforced by upstream proxies or WAFs.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37236.json",
    "cna_assigner": "mitre"
}
References

Affected packages

Git / github.com/grpc-ecosystem/grpc-gateway

Affected ranges

Type
GIT
Repo
https://github.com/grpc-ecosystem/grpc-gateway
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
72123cd4f32545f6e1376873f412dcdcbcf29acc
Database specific
Show details 
{
    "source": "REFERENCES"
}

Affected versions

v1.*
v1.0.0
v1.1.0
v1.10.0
v1.11.0
v1.11.1
v1.11.2
v1.11.3
v1.12.0
v1.12.1
v1.12.2
v1.13.0
v1.14.0
v1.14.1
v1.14.2
v1.14.3
v1.14.4
v1.14.5
v1.14.6
v1.14.7
v1.14.8
v1.15.0
v1.15.1
v1.15.2
v1.2.0
v1.2.0.rc1
v1.2.1
v1.2.2
v1.3
v1.3.0
v1.4.0
v1.4.1
v1.5.0
v1.5.1
v1.6.2
v1.6.3
v1.6.4
v1.7.0
v1.8.0
v1.8.1
v1.8.1-pre1
v1.8.2
v1.8.3
v1.8.4
v1.8.5
v1.8.6
v1.9.0
v1.9.1
v1.9.2
v1.9.3
v1.9.4
v1.9.5
v1.9.6
v2.*
v2.0.0
v2.0.0-alpha.1
v2.0.0-beta.2
v2.0.1
v2.1.0
v2.10.0
v2.10.1
v2.10.2
v2.10.3
v2.11.0
v2.11.1
v2.11.2
v2.11.3
v2.12.0
v2.13.0
v2.14.0
v2.15.0
v2.15.1
v2.15.2
v2.16.0
v2.16.1
v2.16.2
v2.17.0
v2.17.1
v2.18.0
v2.18.1
v2.19.0
v2.19.1
v2.2.0
v2.20.0
v2.21.0
v2.22.0
v2.23.0
v2.24.0
v2.25.0
v2.25.1
v2.26.0
v2.26.1
v2.26.2
v2.26.3
v2.26.7
v2.27.0
v2.27.1
v2.27.2
v2.27.3
v2.27.4
v2.27.5
v2.27.6
v2.27.7
v2.27.8
v2.28.0
v2.3.0
v2.4.0
v2.5.0
v2.6.0
v2.7.0
v2.7.1
v2.7.2
v2.7.3
v2.8.0
v2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-37236.json"