Vulnerability-Lookup

GHSA-4PM7-2F9H-VXJ4

Vulnerability from github – Published: 2026-10-20 18:31 – Updated: 2026-10-20 18:31

Details

SuggestArr before 3.0.0 contains an authentication bypass vulnerability in its local_bypass authentication mode where enforce_authentication() in api_service/auth/middleware.py trusts the client-controlled request.remote_addr value, which is derived from the spoofable X-Forwarded-For header due to ProxyFix(x_for=1) configuration in api_service/app.py. Attackers can send a request with X-Forwarded-For set to a trusted CIDR address such as 127.0.0.1 to be granted an unauthenticated admin session via _load_bypass_user_context(), gaining full administrative access to endpoints like /api/users and /api/jobs without providing any credentials.

Severity

9.3 (Critical)


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

9.1 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-113703"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-290"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-20T16:17:13Z",
    "severity": "CRITICAL"
  },
  "details": "SuggestArr before 3.0.0 contains an authentication bypass vulnerability in its local_bypass authentication mode where enforce_authentication() in api_service/auth/middleware.py trusts the client-controlled request.remote_addr value, which is derived from the spoofable X-Forwarded-For header due to ProxyFix(x_for=1) configuration in api_service/app.py. Attackers can send a request with X-Forwarded-For set to a trusted CIDR address such as 127.0.0.1 to be granted an unauthenticated admin session via _load_bypass_user_context(), gaining full administrative access to endpoints like /api/users and /api/jobs without providing any credentials.",
  "id": "GHSA-4pm7-2f9h-vxj4",
  "modified": "2026-10-20T18:31:46Z",
  "published": "2026-10-20T18:31:46Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/giuseppe99barchetta/SuggestArr/security/advisories/GHSA-fcjm-xhw8-pmh5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113703"
    },
    {
      "type": "WEB",
      "url": "https://github.com/giuseppe99barchetta/SuggestArr/releases/tag/v3.0.0"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/suggestarr-before-authentication-bypass-via-x-forwarded-for-spoofing"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/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:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-113703 (GCVE-0-2026-113703)

Vulnerability from cvelistv5 – Published: 2026-10-20 15:56 – Updated: 2026-10-20 16:18 X_Open Source

Title

SuggestArr before 3.0.0 Authentication Bypass via X-Forwarded-For Spoofing

Summary

Severity

9.1 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

9.3 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-20 16:18 UTC

CWE

CWE-290 - Authentication Bypass by Spoofing

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6657 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/giuseppe99barchetta/SuggestArr…	release-notespatch
https://github.com/giuseppe99barchetta/SuggestArr…	vendor-advisory
https://www.vulncheck.com/advisories/suggestarr-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
giuseppe99barchetta	SuggestArr	Affected: 1.0.4 , < 3.0.0 (semver) cpe:2.3:a:giuseppe99barchetta:suggestarr::::::::

Date Public

2026-10-20 00:00

Credits

Komiljon Ayubov

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-113703",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-20T16:18:19.240308Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-20T16:18:36.636Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/giuseppe99barchetta/SuggestArr/security/advisories/GHSA-fcjm-xhw8-pmh5"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/giuseppe99barchetta/SuggestArr",
          "product": "SuggestArr",
          "repo": "https://github.com/giuseppe99barchetta/SuggestArr",
          "vendor": "giuseppe99barchetta",
          "versions": [
            {
              "lessThan": "3.0.0",
              "status": "affected",
              "version": "1.0.4",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:giuseppe99barchetta:suggestarr:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "3.0.0",
                  "versionStartIncluding": "1.0.4",
                  "vulnerable": true
                }
              ],
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            }
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      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
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            "attackVector": "NETWORK",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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      ],
      "providerMetadata": {
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      },
      "references": [
        {
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          "tags": [
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          "url": "https://github.com/giuseppe99barchetta/SuggestArr/releases/tag/v3.0.0"
        },
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          ],
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        },
        {
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          "tags": [
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          ],
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        }
      ],
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      },
      "tags": [
        "x_open-source"
      ],
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    "dateReserved": "2026-10-20T15:50:59.510Z",
    "dateUpdated": "2026-10-20T16:18:36.636Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

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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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