Vulnerability-Lookup

GHSA-27P7-FQ6V-HH4M

Vulnerability from github – Published: 2026-03-30 06:30 – Updated: 2026-03-30 06:30

Details

A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of the file bgpd/bgp_evpn.c of the component EVPN Type-2 Route Handler. The manipulation leads to improper access controls. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is reported as difficult. The identifier of the patch is 7676cad65114aa23adde583d91d9d29e2debd045. To fix this issue, it is recommended to deploy a patch.

Severity

4.2 (Medium)


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

2.3 (Low)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-5107"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-266"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-30T06:16:05Z",
    "severity": "LOW"
  },
  "details": "A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of the file bgpd/bgp_evpn.c of the component EVPN Type-2 Route Handler. The manipulation leads to improper access controls. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is reported as difficult. The identifier of the patch is 7676cad65114aa23adde583d91d9d29e2debd045. To fix this issue, it is recommended to deploy a patch.",
  "id": "GHSA-27p7-fq6v-hh4m",
  "modified": "2026-03-30T06:30:26Z",
  "published": "2026-03-30T06:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5107"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FRRouting/frr/pull/21098"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FRRouting/frr/commit/7676cad65114aa23adde583d91d9d29e2debd045"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FRRouting/frr"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/780123"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/354132"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/354132/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/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-2026-5107 (GCVE-0-2026-5107)

Vulnerability from cvelistv5 – Published: 2026-03-30 05:00 – Updated: 2026-03-30 16:02 X_Open Source

Title

FRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access control

Summary

Severity

2.3 (Low)


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

4.2 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C

4.2 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-30 16:01 UTC

CWE

CWE-284 - Improper Access Controls
CWE-266 - Incorrect Privilege Assignment

Assigner

VulDB mitre root

References

6 references

URL	Tags
https://vuldb.com/vuln/354132	vdb-entrytechnical-description
https://vuldb.com/vuln/354132/cti	signaturepermissions-required
https://vuldb.com/submit/780123	third-party-advisory
https://github.com/FRRouting/frr/pull/21098	issue-trackingpatch
https://github.com/FRRouting/frr/commit/7676cad65…	patch
https://github.com/FRRouting/frr/	product

Impacted products

1 product

Vendor	Product	Version
FRRouting	FRR	Affected: 10.5.0 Affected: 10.5.1

Credits

rensiru (VulDB User)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5107",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-30T16:01:58.307304Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-30T16:02:10.336Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "EVPN Type-2 Route Handler"
          ],
          "product": "FRR",
          "vendor": "FRRouting",
          "versions": [
            {
              "status": "affected",
              "version": "10.5.0"
            },
            {
              "status": "affected",
              "version": "10.5.1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "rensiru (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of the file bgpd/bgp_evpn.c of the component EVPN Type-2 Route Handler. The manipulation leads to improper access controls. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is reported as difficult. The identifier of the patch is 7676cad65114aa23adde583d91d9d29e2debd045. To fix this issue, it is recommended to deploy a patch."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 2.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C",
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        },
        {
          "cvssV3_0": {
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 3.6,
            "vectorString": "AV:N/AC:H/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-284",
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              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-266",
              "description": "Incorrect Privilege Assignment",
              "lang": "en",
              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-30T05:00:19.025Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-354132 | FRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access control",
          "tags": [
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          ],
          "url": "https://vuldb.com/vuln/354132"
        },
        {
          "name": "VDB-354132 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/354132/cti"
        },
        {
          "name": "Submit #780123 | FRRouting FRR 10.5.1 Improper Input Validation",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/780123"
        },
        {
          "tags": [
            "issue-tracking",
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          "url": "https://github.com/FRRouting/frr/pull/21098"
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        {
          "tags": [
            "patch"
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          "url": "https://github.com/FRRouting/frr/commit/7676cad65114aa23adde583d91d9d29e2debd045"
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        {
          "tags": [
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      "tags": [
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          "value": "Advisory disclosed"
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          "time": "2026-03-29T01:00:00.000Z",
          "value": "VulDB entry created"
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          "lang": "en",
          "time": "2026-03-29T20:00:50.000Z",
          "value": "VulDB entry last update"
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      "title": "FRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access control"
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  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
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    "datePublished": "2026-03-30T05:00:19.025Z",
    "dateReserved": "2026-03-29T17:55:46.788Z",
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    "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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-27P7-FQ6V-HH4M

CVE-2026-5107 (GCVE-0-2026-5107)

Tags

Sightings

Nomenclature

Related by attack behaviour