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CVE-2026-41043

Status: AnalyzedMedium (6.5)—

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache ActiveMQ, Apache ActiveMQ Web.

An authenticated attacker can show malicious content when browsing queues in the web console by overriding the content type to be HTML (instead of XML) and by injecting HTML into a JMS selector field.

This issue affects Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ Web: before 5.19.6, from 6.0.0 before 6.2.5.

Users are recommended to upgrade to version 6.2.5 or 5.19.6, which fixes the issue.

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 (2)

Apache — ActivemqApache — Activemq WEB

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-41043",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41043",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-24T18:05:08.864867Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache ActiveMQ",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "5.19.6",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.0.0",
              "lessThan": "6.2.5",
              "versionType": "semver"
            }
          ],
          "packageName": "org.apache.activemq:apache-activemq",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache ActiveMQ Web",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "5.19.6",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.0.0",
              "lessThan": "6.2.5",
              "versionType": "semver"
            }
          ],
          "packageName": "org.apache.activemq:activemq-web",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-04-24T11:16:22.670",
  "references": [
    {
      "url": "https://activemq.apache.org/security-advisories.data/CVE-2026-41043-announcement.txt",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/04/23/5",
      "tags": [
        "Mailing List"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@apache.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-915"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache ActiveMQ, Apache ActiveMQ Web.\n\nAn authenticated attacker can show malicious content when browsing queues in the web console by overriding the content type to be HTML (instead of XML) and by injecting HTML into a JMS selector field.\n\nThis issue affects Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ Web: before 5.19.6, from 6.0.0 before 6.2.5.\n\nUsers are recommended to upgrade to version 6.2.5 or 5.19.6, which fixes the issue."
    }
  ],
  "lastModified": "2026-06-17T10:46:05.000",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "550C287A-18F0-462A-BFC9-2AD8A64B951A",
              "versionEndExcluding": "5.19.6"
            },
            {
              "criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F7BDD719-DDF9-42A2-AD9D-05FB6D758EF1",
              "versionEndExcluding": "6.2.5",
              "versionStartIncluding": "6.0.0"
            },
            {
              "criteria": "cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6D85C151-239D-408F-833F-9DEB4341EC19",
              "versionEndExcluding": "5.19.6"
            },
            {
              "criteria": "cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D0D5129B-51AC-4A0D-B4A4-17D84A9D89CE",
              "versionEndExcluding": "6.2.5",
              "versionStartIncluding": "6.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@apache.org"
}