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CVE-2026-5146

Status: AnalyzedMedium (4.3)—

Improper access control in the notification management endpoints in Devolutions Server allows an unauthenticated attacker to modify or delete arbitrary user notification records via missing session validation.

This issue affects the following versions :

Devolutions Server 2026.1.6.0 through 2026.1.15.0

Devolutions Server 2025.3.19.0 and earlier

Technical details traces, logs and code from the original report
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CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Devolutions — Devolutions Server

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-5146",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-5146",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-13T16:01:03.701737Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@devolutions.net",
      "affectedData": [
        {
          "vendor": "Devolutions",
          "product": "Server",
          "versions": [
            {
              "status": "affected",
              "version": "2026.1.6.0",
              "versionType": "custom",
              "lessThanOrEqual": "2026.1.15.0"
            },
            {
              "status": "affected",
              "version": "0",
              "versionType": "custom",
              "lessThanOrEqual": "2025.3.19.0"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-12T18:17:32.177",
  "references": [
    {
      "url": "https://devolutions.net/security/advisories/DEVO-2026-0012",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@devolutions.net"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@devolutions.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper access control in the notification management endpoints in Devolutions Server allows an unauthenticated attacker to modify or delete arbitrary user notification records via missing session validation.\n\n\n\nThis issue affects the following versions :\n\n  *  \n\nDevolutions Server 2026.1.6.0 through 2026.1.15.0\n\n\n  *  \n\nDevolutions Server 2025.3.19.0 and earlier"
    }
  ],
  "lastModified": "2026-06-17T10:58:29.750",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BD7B670C-2346-44E8-BE4B-4324FBD12236",
              "versionEndExcluding": "2025.3.20.0"
            },
            {
              "criteria": "cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A08CC967-A298-4FA5-AC22-5B1DD5D92188",
              "versionEndExcluding": "2026.1.16.0",
              "versionStartIncluding": "2026.1.6.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@devolutions.net"
}