CVE-2026-56676

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Source

https://cve.org/CVERecord?id=CVE-2026-56676

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56676.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-56676

Aliases

GHSA-cmhj-wh2f-9cgx

Published

2026-07-10T15:30:49Z

Modified

2026-10-28T02:30:42Z

Severity

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

Summary

9router: Image prefetch DNS rebinding allows SSRF to internal services

Details

9Router is an AI router & token saver. Prior to 0.5.2, 9router validates image URLs by resolving the host before fetching, but open-sse/translator/concerns/image.js performs the later server-side image fetch with a separate DNS resolution. An authenticated attacker with access to the LLM proxy can use a vision-capable model and an attacker-controlled DNS name that first resolves to a public IP and then rebinds to an internal address, allowing server-side requests to internal-only HTTP services. This issue is fixed in version 0.5.2.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-367",
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56676.json"
}

References

Affected packages

Git / github.com/decolua/9router

Affected ranges

Type

GIT

Repo

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

Events

Introduced

Fixed

5da508af3c3dc6e920286141d1a4ddcd4ec245db

Fixed

c7d07448c58bec1200741de0b73305b860416b82

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "0.5.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "c7d07448c58bec1200741de0b73305b860416b82"
                }
            ],
            "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-2026-56676.json"