GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-27126 (GCVE-0-2026-27126)

Vulnerability from cvelistv5 – Published: 2026-02-24 02:30 – Updated: 2026-02-24 19:35
VLAI
Title
Craft CMS has Stored XSS in Table Field via "HTML" Column Type
Summary
Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a stored Cross-site Scripting (XSS) vulnerability exists in the `editableTable.twig` component when using the `html` column type. The application fails to sanitize the input, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field. In order to exploit the vulnerability, an attacker must have an administrator account, and `allowAdminChanges` must be enabled in production, which is against Craft's security recommendations. Versions 4.16.19 and 5.8.23 patch the issue.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-24 19:33 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
Impacted products
Vendor Product Version CPE status
craftcms cms Affected: >= 4.5.0-RC1, < 4.16.19
Affected: >= 5.0.0-RC1, < 5.8.23
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-27126",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-24T19:33:58.093384Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-24T19:35:38.348Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cms",
          "vendor": "craftcms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.5.0-RC1, \u003c 4.16.19"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.0.0-RC1, \u003c 5.8.23"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a stored Cross-site Scripting (XSS) vulnerability exists in the `editableTable.twig` component when using the `html` column type. The application fails to sanitize the input, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field. In order to exploit the vulnerability, an attacker must have an administrator account, and `allowAdminChanges` must be enabled in production, which is against Craft\u0027s security recommendations. Versions 4.16.19 and 5.8.23 patch the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-24T02:30:04.882Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/craftcms/cms/security/advisories/GHSA-3jh3-prx3-w6wc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/craftcms/cms/security/advisories/GHSA-3jh3-prx3-w6wc"
        },
        {
          "name": "https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b"
        }
      ],
      "source": {
        "advisory": "GHSA-3jh3-prx3-w6wc",
        "discovery": "UNKNOWN"
      },
      "title": "Craft CMS has Stored XSS in Table Field via \"HTML\" Column Type"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-27126",
    "datePublished": "2026-02-24T02:30:04.882Z",
    "dateReserved": "2026-02-17T18:42:27.043Z",
    "dateUpdated": "2026-02-24T19:35:38.348Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-27126",
      "date": "2026-09-17",
      "epss": "0.00217",
      "percentile": "0.12323"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-27126\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-02-24T03:16:02.267\",\"lastModified\":\"2026-06-17T10:26:42.777\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a stored Cross-site Scripting (XSS) vulnerability exists in the `editableTable.twig` component when using the `html` column type. The application fails to sanitize the input, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field. In order to exploit the vulnerability, an attacker must have an administrator account, and `allowAdminChanges` must be enabled in production, which is against Craft\u0027s security recommendations. Versions 4.16.19 and 5.8.23 patch the issue.\"},{\"lang\":\"es\",\"value\":\"Craft es un sistema de gesti\u00f3n de contenido (CMS). En las versiones 4.5.0-RC1 a 4.16.18 y 5.0.0-RC1 a 5.8.22, existe una vulnerabilidad de cross-site scripting (XSS) almacenado en el componente \u0027editableTable.twig\u0027 al usar el tipo de columna \u0027html\u0027. La aplicaci\u00f3n no sanitiza la entrada, permitiendo a un atacante ejecutar JavaScript arbitrario cuando otro usuario ve una p\u00e1gina con el campo de tabla malicioso. Para explotar la vulnerabilidad, un atacante debe tener una cuenta de administrador, y \u0027allowAdminChanges\u0027 debe estar habilitado en producci\u00f3n, lo cual va en contra de las recomendaciones de seguridad de Craft. Las versiones 4.16.19 y 5.8.23 parchean el problema.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"craftcms\",\"product\":\"cms\",\"versions\":[{\"version\":\"\u003e= 4.5.0-RC1, \u003c 4.16.19\",\"status\":\"affected\"},{\"version\":\"\u003e= 5.0.0-RC1, \u003c 5.8.23\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/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\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"PRESENT\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"PASSIVE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.7,\"impactScore\":2.7}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-02-24T19:33:58.093384Z\",\"id\":\"CVE-2026-27126\",\"options\":[{\"exploitation\":\"poc\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*\",\"versionStartExcluding\":\"4.5.0\",\"versionEndExcluding\":\"4.16.19\",\"matchCriteriaId\":\"FF425F3E-1E6A-4EE8-A1F8-9FA5399DE8DD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*\",\"versionStartExcluding\":\"5.0.0\",\"versionEndExcluding\":\"5.8.23\",\"matchCriteriaId\":\"A9572A70-5447-4861-9EC3-E51C5A7A9C56\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:craftcms:craft_cms:4.5.0:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"48EC469C-4A9C-40A5-AD71-386D47255223\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:craftcms:craft_cms:4.5.0:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"25BADF46-CF5B-448C-BE38-D297D7512534\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"1C7461CF-35AB-48E1-88B6-956DAE1D2AB4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8D8E02D1-601A-4E2B-B619-4775BFDB72D0\"}]}]}],\"references\":[{\"url\":\"https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/craftcms/cms/security/advisories/GHSA-3jh3-prx3-w6wc\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-03-27T07:56:45+00:00",
      "cve": "CVE-2026-27126",
      "id": "CVE-2026-27126",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Craft CMS has Stored XSS in Table Field via \"HTML\" Column Type",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27126.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-27126\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-24T19:33:58.093384Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-24T19:35:31.642Z\"}}], \"cna\": {\"title\": \"Craft CMS has Stored XSS in Table Field via \\\"HTML\\\" Column Type\", \"source\": {\"advisory\": \"GHSA-3jh3-prx3-w6wc\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 5.9, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N\", \"userInteraction\": \"PASSIVE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"LOW\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"craftcms\", \"product\": \"cms\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 4.5.0-RC1, \u003c 4.16.19\"}, {\"status\": \"affected\", \"version\": \"\u003e= 5.0.0-RC1, \u003c 5.8.23\"}]}], \"references\": [{\"url\": \"https://github.com/craftcms/cms/security/advisories/GHSA-3jh3-prx3-w6wc\", \"name\": \"https://github.com/craftcms/cms/security/advisories/GHSA-3jh3-prx3-w6wc\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b\", \"name\": \"https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a stored Cross-site Scripting (XSS) vulnerability exists in the `editableTable.twig` component when using the `html` column type. The application fails to sanitize the input, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field. In order to exploit the vulnerability, an attacker must have an administrator account, and `allowAdminChanges` must be enabled in production, which is against Craft\u0027s security recommendations. Versions 4.16.19 and 5.8.23 patch the issue.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-02-24T02:30:04.882Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-27126\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-24T19:35:38.348Z\", \"dateReserved\": \"2026-02-17T18:42:27.043Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-02-24T02:30:04.882Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


Loading…