CVE-2026-45697 (GCVE-0-2026-45697)

Vulnerability from cvelistv5 – Published: 2026-05-29 19:01 – Updated: 2026-06-01 15:18
VLAI
Title
Formie: Pre-authenticated server-side template injection in Hidden fields
Summary
Formie is a Craft CMS plugin for creating forms. Prior to 2.2.20 and 3.1.24, unauthenticated users could submit crafted values into Hidden fields (with Default value → Custom) that were evaluated as Twig during submission handling, which could lead to serious compromise of the Craft site (depending on template/sandbox behavior). This vulnerability is fixed in 2.2.20 and 3.1.24.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
  • CWE-693 - Protection Mechanism Failure
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
Impacted products
Vendor Product Version
verbb formie Affected: < 2.2.20
Affected: >= 3.0.0-beta.1, < 3.1.24
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-45697",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-01T15:18:36.758634Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-01T15:18:51.317Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "formie",
          "vendor": "verbb",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.2.20"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0-beta.1, \u003c 3.1.24"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Formie is a Craft CMS plugin for creating forms. Prior to 2.2.20 and 3.1.24, unauthenticated users could submit crafted values into Hidden fields (with Default value \u2192 Custom) that were evaluated as Twig during submission handling, which could lead to serious compromise of the Craft site (depending on template/sandbox behavior). This vulnerability is fixed in 2.2.20 and 3.1.24."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-693",
              "description": "CWE-693: Protection Mechanism Failure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-1336",
              "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-29T19:01:49.220Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/verbb/formie/security/advisories/GHSA-x7m9-mwc2-g6w2",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/verbb/formie/security/advisories/GHSA-x7m9-mwc2-g6w2"
        },
        {
          "name": "https://github.com/verbb/formie/commit/f690d5623163ce2a95da305238d6367575486ee3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/verbb/formie/commit/f690d5623163ce2a95da305238d6367575486ee3"
        },
        {
          "name": "https://github.com/verbb/formie/releases/tag/2.2.20",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/verbb/formie/releases/tag/2.2.20"
        },
        {
          "name": "https://github.com/verbb/formie/releases/tag/3.1.24",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/verbb/formie/releases/tag/3.1.24"
        }
      ],
      "source": {
        "advisory": "GHSA-x7m9-mwc2-g6w2",
        "discovery": "UNKNOWN"
      },
      "title": "Formie: Pre-authenticated server-side template injection in Hidden fields"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-45697",
    "datePublished": "2026-05-29T19:01:49.220Z",
    "dateReserved": "2026-05-13T04:38:01.165Z",
    "dateUpdated": "2026-06-01T15:18:51.317Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-45697",
      "date": "2026-07-21",
      "epss": "0.00475",
      "percentile": "0.38113"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-45697\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-05-29T20:16:27.393\",\"lastModified\":\"2026-07-22T06:10:00.170\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Formie is a Craft CMS plugin for creating forms. Prior to 2.2.20 and 3.1.24, unauthenticated users could submit crafted values into Hidden fields (with Default value \u2192 Custom) that were evaluated as Twig during submission handling, which could lead to serious compromise of the Craft site (depending on template/sandbox behavior). This vulnerability is fixed in 2.2.20 and 3.1.24.\"},{\"lang\":\"es\",\"value\":\"Formie es un plugin de Craft CMS para crear formularios. Antes de las versiones 2.2.20 y 3.1.24, los usuarios no autenticados pod\u00edan enviar valores manipulados en campos ocultos (con Valor predeterminado ? Personalizado) que eran evaluados como Twig durante el procesamiento del env\u00edo, lo que podr\u00eda llevar a un compromiso grave del sitio de Craft (dependiendo del comportamiento de la plantilla/sandbox). Esta vulnerabilidad est\u00e1 corregida en las versiones 2.2.20 y 3.1.24.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"verbb\",\"product\":\"formie\",\"versions\":[{\"version\":\"\u003c 2.2.20\",\"status\":\"affected\"},{\"version\":\"\u003e= 3.0.0-beta.1, \u003c 3.1.24\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-06-01T15:18:36.758634Z\",\"id\":\"CVE-2026-45697\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-94\"},{\"lang\":\"en\",\"value\":\"CWE-693\"},{\"lang\":\"en\",\"value\":\"CWE-1336\"}]}],\"references\":[{\"url\":\"https://github.com/verbb/formie/commit/f690d5623163ce2a95da305238d6367575486ee3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/verbb/formie/releases/tag/2.2.20\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/verbb/formie/releases/tag/3.1.24\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/verbb/formie/security/advisories/GHSA-x7m9-mwc2-g6w2\",\"source\":\"security-advisories@github.com\"}]}}",
    "redhat_vex": {
      "current_release_date": "2026-06-01T22:03:33+00:00",
      "cve": "CVE-2026-45697",
      "id": "CVE-2026-45697",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Formie: Pre-authenticated server-side template injection in Hidden fields",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45697.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.