CVE-2026-55641

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Source

https://cve.org/CVERecord?id=CVE-2026-55641

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55641.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-55641

Aliases

GHSA-86m2-fcxq-5q7c

Published

2026-07-10T15:36:05Z

Modified

2026-10-28T02:30:28Z

Severity

8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N CVSS Calculator

Summary

9router: Unauthenticated `/v1` proxy access via `Host`-header spoofing → open AI relay + SSRF

Details

9Router is an AI router & token saver. Prior to 0.5.2, 9router determines whether a /v1 LLM proxy request is local by reading the client-controlled Host header, allowing a remote unauthenticated attacker to send Host: localhost and bypass API-key authentication. In the default configuration, this exposes the /v1 proxy to upstream provider calls using stored provider credentials and allows /v1/search with the searxng provider_options.baseUrl parameter to drive server-side requests to internal or cloud-metadata hosts. This issue is fixed in version 0.5.2.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1327",
        "CWE-290",
        "CWE-348",
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55641.json"
}

References

Affected packages

Git / github.com/decolua/9router

Affected ranges

Type

GIT

Repo

https://github.com/decolua/9router

Events

Introduced

Fixed

5da508af3c3dc6e920286141d1a4ddcd4ec245db

Fixed

b282f0554972ea35281520738759d76abcd0b0b3

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "0.5.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "b282f0554972ea35281520738759d76abcd0b0b3"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v0.5.2",
            "range": [
                {
                    "fixed": "5da508af3c3dc6e920286141d1a4ddcd4ec245db"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v0.*

v0.2.21

v0.2.27

v0.2.31

v0.2.36

v0.2.43

v0.2.52

v0.2.56

v0.2.67

v0.2.70

v0.2.71

v0.2.79

v0.2.89

v0.3.17

v0.3.34

v0.3.42

v0.3.47

v0.3.75

v0.3.83

v0.3.86

v0.3.87

v0.3.89

v0.3.90

v0.3.91

v0.3.97

v0.3.98

v0.4.1

v0.4.10

v0.4.11

v0.4.12

v0.4.13

v0.4.14

v0.4.16

v0.4.18

v0.4.19

v0.4.2

v0.4.20

v0.4.25

v0.4.27

v0.4.28

v0.4.29

v0.4.3

v0.4.30

v0.4.31

v0.4.33

v0.4.36

v0.4.37

v0.4.38

v0.4.39

v0.4.4

v0.4.41

v0.4.44

v0.4.46

v0.4.49

v0.4.50

v0.4.52

v0.4.55

v0.4.58

v0.4.59

v0.4.6

v0.4.62

v0.4.63

v0.4.66

v0.4.71

v0.4.8

v0.4.80

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55641.json"