CVE-2026-119755 (GCVE-0-2026-119755)

Vulnerability from cvelistv5 – Published: 2026-11-09 17:27 – Updated: 2026-11-09 17:27 X_Open Source
VLAI
Title
Tasmota 16.0.0 CSRF via Referer Header Validation Bypass
Summary
Tasmota through 16.0.0, fixed in commit 1cb7ebc, contains a cross-site request forgery vulnerability that allows unauthenticated attackers to bypass Referer-based CSRF protection in HttpCheckPriviledgedAccess() by crafting a Referer header where the device hostname or IP appears as a substring immediately after http://.evil.com/. Attackers can lure an administrator on the device's network to a malicious page to issue arbitrary console commands and reconfigure Wi-Fi, MQTT, settings, or firmware on devices lacking a WebPassword.
Severity
7.5 (High)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
arendst Tasmota Affected: 0 , ≤ 16.0.0 (semver)
Unaffected: 1cb7ebcafb0b79f1836d0e9948275f78abc17d7b (git)
Create a notification for this product.
Date Public
2026-11-06 00:00
Credits
Abdurakhmonov Ulugbek
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/arendst/Tasmota",
          "product": "Tasmota",
          "repo": "https://github.com/arendst/Tasmota",
          "vendor": "arendst",
          "versions": [
            {
              "lessThanOrEqual": "16.0.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "versionType": "git"
            }
          ]
        }
      ],
      "credits": [
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      ],
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      "descriptions": [
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
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              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-352",
              "description": "Cross-Site Request Forgery (CSRF)",
              "lang": "en",
              "type": "CWE"
            }
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-09T17:27:01.011Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
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          "tags": [
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          "url": "https://github.com/arendst/Tasmota/commit/1cb7ebcafb0b79f1836d0e9948275f78abc17d7b"
        },
        {
          "name": "VulnCheck Advisory: Tasmota 16.0.0 CSRF via Referer Header Validation Bypass",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/tasmota-csrf-via-referer-header-validation-bypass"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "title": "Tasmota 16.0.0 CSRF via Referer Header Validation Bypass",
      "x_generator": {
        "engine": "vulncheck"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-119755",
    "datePublished": "2026-11-09T17:27:01.011Z",
    "dateReserved": "2026-10-30T15:31:52.080Z",
    "dateUpdated": "2026-11-09T17:27:01.011Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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