Vulnerability-Lookup

CVE-2026-82811 (GCVE-0-2026-82811)

Vulnerability from cvelistv5 – Published: 2026-08-31 17:00 – Updated: 2026-08-31 18:47

Title

Toggl OÜ Toggl Track Extension postMessage origin validation

Summary

A security vulnerability has been detected in Toggl OÜ Toggl Track Extension 4.11.16. This affects an unknown function of the component postMessage Handler. The manipulation leads to origin validation error. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R

5.4 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-31 18:47 UTC

CWE

CWE-346 - Origin Validation Error
CWE-345 - Insufficient Verification of Data Authenticity

Assigner

VulDB mitre root

References

5 references

URL	Tags
https://vuldb.com/vuln/397230	vdb-entry
https://vuldb.com/vuln/397230/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82811	third-party-advisory
https://vuldb.com/submit/875273	third-party-advisory
https://github.com/xryj920/chrome_extensions/blob…	exploit

Impacted products

1 product

Vendor	Product	Version	CPE status
Toggl OÜ	Toggl Track Extension	Affected: 4.11.16 cpe:2.3:a:toggl_o_:toggl_track_extension::::::::

Credits

DRXYJ (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-82811

Vulnerability from fkie_nvd - Published: 2026-08-31 18:17 - Updated: 2026-08-31 19:17

Severity

5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/xryj920/chrome_extensions/blob/main/Toggl%20O%C3%9C%20Toggl%20Track%204.11.16%20accepts%20forged%20session-state%20messages%20through%20an%20unauthenticated%20postMessage%20handler
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-82811
	cna@vuldb.com	https://vuldb.com/submit/875273
	cna@vuldb.com	https://vuldb.com/vuln/397230
	cna@vuldb.com	https://vuldb.com/vuln/397230/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:toggl_o_:toggl_track_extension:*:*:*:*:*:*:*:*"
          ],
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          "vendor": "Toggl O\u00dc",
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    }
  ],
  "id": "CVE-2026-82811",
  "lastModified": "2026-08-31T19:17:22.677",
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          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
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          "modifiedAttackVector": "NOT_DEFINED",
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          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-82811",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-31T18:47:13.671688Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-31T18:17:23.937",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/xryj920/chrome_extensions/blob/main/Toggl%20O%C3%9C%20Toggl%20Track%204.11.16%20accepts%20forged%20session-state%20messages%20through%20an%20unauthenticated%20postMessage%20handler"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-82811"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/875273"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/397230"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/397230/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        },
        {
          "lang": "en",
          "value": "CWE-346"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-XP3V-WVPF-CJP5

Vulnerability from github – Published: 2026-08-31 18:31 – Updated: 2026-08-31 18:31

Details

Severity

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

2.1 (Low)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-82811"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-31T18:17:23Z",
    "severity": "LOW"
  },
  "details": "A security vulnerability has been detected in Toggl O\u00dc Toggl Track Extension 4.11.16. This affects an unknown function of the component postMessage Handler. The manipulation leads to origin validation error. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
  "id": "GHSA-xp3v-wvpf-cjp5",
  "modified": "2026-08-31T18:31:32Z",
  "published": "2026-08-31T18:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82811"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xryj920/chrome_extensions/blob/main/Toggl%20O%C3%9C%20Toggl%20Track%204.11.16%20accepts%20forged%20session-state%20messages%20through%20an%20unauthenticated%20postMessage%20handler"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-82811"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/875273"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/397230"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/397230/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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",
      "type": "CVSS_V4"
    }
  ]
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-82811 (GCVE-0-2026-82811)

FKIE_CVE-2026-82811

GHSA-XP3V-WVPF-CJP5

Tags

Sightings

Nomenclature