Vulnerability-Lookup

GHSA-H62J-CRG6-GVWF

Vulnerability from github – Published: 2026-07-10 00:31 – Updated: 2026-07-10 00:31

Details

If an MX Series device is configured with web filtering, and an attacker sends a request with a specifically formatted URL, this request will get forwarded despite the system being configured to block it. In turn, an attacker can access downstream resources that are expected to be unreachable.

This issue affects Junos OS on MX Series:

all versions before 23.2R2-S7,
23.4 versions before 23.4R2-S8,
24.2 versions before 24.2R2-S5,
24.4 versions before 24.4R2-S4,
25.2 versions before 25.2R2-S1,
25.4 versions before 25.4R1-S2, 25.4R2.

Severity

5.8 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/AU:Y/RE:M

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-57054"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-706"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-09T22:17:09Z",
    "severity": "MODERATE"
  },
  "details": "A Use of Incorrectly-Resolved Name or Reference vulnerability in the URL filtering plugin of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to bypass web filtering and access downstream resources that should be unreachable.\n\n\n\nIf an MX Series device is configured with web filtering, and an attacker sends a request with a specifically formatted URL, this request will get forwarded despite the system being configured to block it. In turn, an attacker can access downstream resources that are expected to be unreachable.\n\nThis issue affects\u00a0Junos OS on MX Series:\n\n\n  *  all versions before 23.2R2-S7,\n  *  23.4 versions before 23.4R2-S8,\n  *  24.2 versions before 24.2R2-S5,\n  *  24.4 versions before 24.4R2-S4,\n  *  25.2 versions before 25.2R2-S1,\n  *  25.4 versions before 25.4R1-S2, 25.4R2.",
  "id": "GHSA-h62j-crg6-gvwf",
  "modified": "2026-07-10T00:31:27Z",
  "published": "2026-07-10T00:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57054"
    },
    {
      "type": "WEB",
      "url": "https://supportportal.juniper.net/JSA110093"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-57054 (GCVE-0-2026-57054)

Vulnerability from cvelistv5 – Published: 2026-07-09 21:14 – Updated: 2026-07-10 14:34

Title

Junos OS: MX Series: Web filtering doesn't block specifically formatted URLs

Summary

A Use of Incorrectly-Resolved Name or Reference vulnerability in the URL filtering plugin of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to bypass web filtering and access downstream resources that should be unreachable. If an MX Series device is configured with web filtering, and an attacker sends a request with a specifically formatted URL, this request will get forwarded despite the system being configured to block it. In turn, an attacker can access downstream resources that are expected to be unreachable. This issue affects Junos OS on MX Series: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S5, * 24.4 versions before 24.4R2-S4, * 25.2 versions before 25.2R2-S1, * 25.4 versions before 25.4R1-S2, 25.4R2.

Severity

5.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/AU:Y/RE:M

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-10 14:33 UTC

CWE

CWE-706 - Use of Incorrectly-Resolved Name or Reference

Assigner

juniper CNA under the mitre root

CNA scorecard B 85/100 over 22 records in the last 180 days details

References

1 reference

URL	Tags
https://supportportal.juniper.net/JSA110093	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 0 , < 23.2R2-S7 (custom) Affected: 23.4 , < 23.4R2-S8 (custom) Affected: 24.2 , < 24.2R2-S5 (custom) Affected: 24.4 , < 24.4R2-S4 (custom) Affected: 25.2 , < 25.2R2-S1 (custom) Affected: 25.4 , < 25.4R1-S2, 25.4R2 (custom)

Date Public

2026-07-08 16:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-57054",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-10T14:33:58.330913Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        "providerMetadata": {
          "dateUpdated": "2026-07-10T14:34:09.815Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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              "lessThan": "23.4R2-S8",
              "status": "affected",
              "version": "23.4",
              "versionType": "custom"
            },
            {
              "lessThan": "24.2R2-S5",
              "status": "affected",
              "version": "24.2",
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            },
            {
              "lessThan": "24.4R2-S4",
              "status": "affected",
              "version": "24.4",
              "versionType": "custom"
            },
            {
              "lessThan": "25.2R2-S1",
              "status": "affected",
              "version": "25.2",
              "versionType": "custom"
            },
            {
              "lessThan": "25.4R1-S2, 25.4R2",
              "status": "affected",
              "version": "25.4",
              "versionType": "custom"
            }
          ]
        }
      ],
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        {
          "lang": "en",
          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "To be exposed to this issue an MX Series device needs to be configured to filter specific URLs as follows:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ services service-set \u0026lt;set-name\u0026gt; web-filter-profile \u0026lt;profile-name\u0026gt; ]\u003cbr\u003e[\u0026nbsp;services web-filter profile \u0026lt;profile-name\u0026gt; url-filter-template \u0026lt;template-name\u0026gt; url-filter-database \u0026lt;file-with-URLs-to-filter\u0026gt; ]\u003c/tt\u003e"
            }
          ],
          "value": "To be exposed to this issue an MX Series device needs to be configured to filter specific URLs as follows:\n\n[ services service-set \u003cset-name\u003e web-filter-profile \u003cprofile-name\u003e ]\n[\u00a0services web-filter profile \u003cprofile-name\u003e url-filter-template \u003ctemplate-name\u003e url-filter-database \u003cfile-with-URLs-to-filter\u003e ]"
        }
      ],
      "datePublic": "2026-07-08T16:00:00.000Z",
      "descriptions": [
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          "supportingMedia": [
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              "base64": false,
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              "value": "A Use of Incorrectly-Resolved Name or Reference vulnerability in the URL filtering plugin of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to bypass web filtering and access downstream resources that should be unreachable.\u003cbr\u003e\u003cbr\u003e\n\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eIf an MX Series device is configured with web filtering, and an attacker sends a request with a specifically formatted URL, this request will get forwarded despite the system being configured to block it. In turn, an attacker can access downstream resources that are expected to be unreachable.\u003c/span\u003e\u003cbr\u003e\u003cp\u003e\u003cbr\u003eThis issue affects\u0026nbsp;Junos OS on MX Series:\u003cbr\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 23.2R2-S7,\u003c/li\u003e\u003cli\u003e23.4 versions before 23.4R2-S8,\u003c/li\u003e\u003cli\u003e24.2 versions before 24.2R2-S5,\u003c/li\u003e\u003cli\u003e24.4 versions before 24.4R2-S4,\u003c/li\u003e\u003cli\u003e25.2 versions before 25.2R2-S1,\u003c/li\u003e\u003cli\u003e25.4 versions before 25.4R1-S2, 25.4R2.\u003c/li\u003e\u003c/ul\u003e\u003cbr\u003e\u003cp\u003e\u003c/p\u003e"
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          "value": "A Use of Incorrectly-Resolved Name or Reference vulnerability in the URL filtering plugin of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to bypass web filtering and access downstream resources that should be unreachable.\n\n\n\nIf an MX Series device is configured with web filtering, and an attacker sends a request with a specifically formatted URL, this request will get forwarded despite the system being configured to block it. In turn, an attacker can access downstream resources that are expected to be unreachable.\n\nThis issue affects\u00a0Junos OS on MX Series:\n\n\n  *  all versions before 23.2R2-S7,\n  *  23.4 versions before 23.4R2-S8,\n  *  24.2 versions before 24.2R2-S5,\n  *  24.4 versions before 24.4R2-S4,\n  *  25.2 versions before 25.2R2-S1,\n  *  25.4 versions before 25.4R1-S2, 25.4R2."
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      ],
      "exploits": [
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          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
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      "metrics": [
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            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
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          "scenarios": [
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          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
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        "shortName": "juniper"
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      "references": [
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          "url": "https://supportportal.juniper.net/JSA110093"
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      "solutions": [
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      "title": "Junos OS: MX Series: Web filtering doesn\u0027t block specifically formatted URLs",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-H62J-CRG6-GVWF

CVE-2026-57054 (GCVE-0-2026-57054)

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