CVE-2026-73549

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Source
https://cve.org/CVERecord?id=CVE-2026-73549
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73549.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73549
Aliases
Downstream
MINI (4)
openSUSE (1)
Related
Published
2026-09-21T19:42:48Z
Modified
2026-10-07T07:05:35Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Envoy - Incomplete fix for CVE-2026-26310: copyInternetAddressAndPort crashes on scoped IPv6 addresses in ORIGINAL_DST clusters
Details

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's Utility::copyInternetAddressAndPort and QUIC client-address paths reconstruct scoped IPv6 addresses through addressAsString and Ipv6Instance. The string includes a percent scope identifier that inet_pton cannot parse, causing an exception or abort. Kernel-provided scoped IPv6 destinations in ORIGINAL_DST transparent-proxy deployments, and affected QUIC connection paths, can therefore terminate the process. The relevant scope boundary is that the HTTP use_http_header override rejects scoped addresses earlier; the advisory's crash path requires a kernel-provided original destination or the affected QUIC path. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-754"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73549.json"
}
References

Affected packages

Git / github.com/envoyproxy/envoy

Affected ranges

Type
GIT
Repo
https://github.com/envoyproxy/envoy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
053a8989382dd91542ecf0cef8f379b9cb761cdd
Introduced
6d9bb7d9a85d616b220d1f8fe67b61f82bbdb8d3
Fixed
cf413bdb37b36d3ffbe570b8a48760abe2b588f5
Introduced
f1dd21b16c244bda00edfb5ffce577e12d0d2ec2
Fixed
ef2d997c1b022cf8b849a1d3521fbf234d79ca26
Introduced
8eea3285d6bdb89f8ea34632cfe7ce1608a8f374
Fixed
b579d07d3ad7ee11d32b105e91a5a39ad24718d7
Fixed
109e5a5b08ad10d99074cefd55a747a16ee64da7
Fixed
59b1744a6cb62746db418ac06fc5e359fd25fdb7
Fixed
6e39f4c94deff7a60d382c2d95883e0ea49ff691
Fixed
ab2dca2d65b079768230a7c3d825afeefa330215
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.36.10"
        },
        {
            "introduced":  "1.37.0"
        },
        {
            "fixed":  "1.37.6"
        },
        {
            "introduced":  "1.38.0"
        },
        {
            "fixed":  "1.38.4"
        },
        {
            "introduced":  "1.39.0"
        },
        {
            "fixed":  "1.39.1"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

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
v1.23.0
v1.24.0
v1.25.0
v1.26.0
v1.27.0
v1.28.0
v1.29.0
v1.3.0
v1.30.0
v1.31.0
v1.32.0
v1.33.0
v1.34.0
v1.35.0
v1.36.0
v1.36.1
v1.36.2
v1.36.3
v1.36.4
v1.36.5
v1.36.6
v1.36.7
v1.36.8
v1.36.9
v1.37.0
v1.37.1
v1.37.2
v1.37.3
v1.37.4
v1.37.5
v1.38.0
v1.38.1
v1.38.2
v1.38.3
v1.39.0
v1.4.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73549.json"
vanir_signatures 
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