CVE-2026-48090

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Source
https://cve.org/CVERecord?id=CVE-2026-48090
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48090.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48090
Aliases
Downstream
Related
Published
2026-06-26T18:03:05.257Z
Modified
2026-07-10T03:54:18.582282756Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Envoy HTTP: OAuth2 filter late async token completion after stream teardown (UAF / crash risk)
Details

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.37.0 until 1.37.5 and 1.38.3, the HTTP OAuth2 filter (envoy.filters.http.oauth2) can leave an in-flight async token exchange attached to a downstream stream that has already been torn down. A late AsyncClient completion can still invoke OAuth2Filter methods that use StreamDecoderFilterCallbacks after that object’s lifetime has ended, causing undefined behavior, worker crashes (availability loss), and use-after-free / invalid-vptr failures under AddressSanitizer. This is a memory-safety / lifetime issue in the data plane, not a trivial config bug. Remote code execution is not claimed here; the primary demonstrated impact is DoS via crash and UB; any further impact would be deployment- and allocator-dependent. This vulnerability is fixed in 1.37.5 and 1.38.3.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48090.json"
}
References

Affected packages

Git / github.com/envoyproxy/envoy

Affected ranges

Type
GIT
Repo
https://github.com/envoyproxy/envoy
Events
Introduced
6d9bb7d9a85d616b220d1f8fe67b61f82bbdb8d3
Fixed
f97695a50e11f5ff6719e129a466bf9204b64a7f
Introduced
f1dd21b16c244bda00edfb5ffce577e12d0d2ec2
Fixed
0ebfcfe5b0484b89ca85b761da9e05ce75dbda8d
Database specific 
{
    "extracted_events": [
        {
            "introduced": "1.37.0"
        },
        {
            "fixed": "1.37.5"
        },
        {
            "introduced": "1.38.0"
        },
        {
            "fixed": "1.38.3"
        }
    ],
    "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE"
}

Affected versions

v1.*
v1.37.0
v1.37.1
v1.37.2
v1.37.3
v1.37.4
v1.38.0
v1.38.1
v1.38.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48090.json"