Vulnerability-Lookup

GHSA-C76V-R5MR-9FPQ

Vulnerability from github – Published: 2026-03-12 18:30 – Updated: 2026-03-12 18:30

Details

A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.

Severity ?

9.9 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-21708"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-12T17:16:36Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.",
  "id": "GHSA-c76v-r5mr-9fpq",
  "modified": "2026-03-12T18:30:31Z",
  "published": "2026-03-12T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21708"
    },
    {
      "type": "WEB",
      "url": "https://www.veeam.com/kb4830"
    },
    {
      "type": "WEB",
      "url": "https://www.veeam.com/kb4831"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-21708 (GCVE-0-2026-21708)

Vulnerability from cvelistv5 – Published: 2026-03-12 16:26 – Updated: 2026-03-13 03:55

Summary

A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.

Severity ?

10 (Critical)


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

CWE

CWE-noinfo Not enough information

Assigner

hackerone

References

URL

Tags

	https://www.veeam.com/kb4831
	https://www.veeam.com/kb4830

Impacted products

	Vendor	Product	Version
	Veeam	Backup and Recovery	Affected: 12.3.2 , < 12.3.2 (semver) Affected: 13.0.1 , < 13.0.1 (semver)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-21708",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-12T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-13T03:55:48.114Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Backup and Recovery",
          "vendor": "Veeam",
          "versions": [
            {
              "lessThan": "12.3.2",
              "status": "affected",
              "version": "12.3.2",
              "versionType": "semver"
            },
            {
              "lessThan": "13.0.1",
              "status": "affected",
              "version": "13.0.1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-12T16:26:52.931Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
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          "url": "https://www.veeam.com/kb4831"
        },
        {
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        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2026-21708",
    "datePublished": "2026-03-12T16:26:52.931Z",
    "dateReserved": "2026-01-04T15:00:06.573Z",
    "dateUpdated": "2026-03-13T03:55:48.114Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-C76V-R5MR-9FPQ

CVE-2026-21708 (GCVE-0-2026-21708)

Tags

Sightings

Nomenclature