CVE-2026-13489 (GCVE-0-2026-13489)

Vulnerability from cvelistv5 – Published: 2026-06-28 10:45 – Updated: 2026-06-28 10:45
VLAI
Title
78 xiaozhi-esp32 MCP Response mcp_server.cc ParseMessage improper synchronization
Summary
A weakness has been identified in 78 xiaozhi-esp32 up to 2.2.6. Affected by this issue is the function ParseMessage of the file main/mcp_server.cc of the component MCP Response Handler. This manipulation causes improper synchronization. Remote exploitation of the attack is possible. The attack's complexity is rated as high. The exploitation is known to be difficult. The exploit has been made available to the public and could be used for attacks. The pull request to fix this issue awaits acceptance.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
3.1 (Low)
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
CWE
  • CWE-662 - Improper Synchronization
Assigner
References
Impacted products
Vendor Product Version
78 xiaozhi-esp32 Affected: 2.2.0
Affected: 2.2.1
Affected: 2.2.2
Affected: 2.2.3
Affected: 2.2.4
Affected: 2.2.5
Affected: 2.2.6
    cpe:2.3:a:78:xiaozhi-esp32:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
dem0000 (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
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      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:78:xiaozhi-esp32:*:*:*:*:*:*:*:*"
          ],
          "modules": [
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          ],
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          "vendor": "78",
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            },
            {
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              "version": "2.2.1"
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              "version": "2.2.2"
            },
            {
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              "version": "2.2.3"
            },
            {
              "status": "affected",
              "version": "2.2.4"
            },
            {
              "status": "affected",
              "version": "2.2.5"
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            }
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          "type": "reporter",
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          "type": "coordinator",
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        }
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            "version": "2.0"
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      "problemTypes": [
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      "providerMetadata": {
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        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
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          "url": "https://vuldb.com/vuln/374486"
        },
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          "name": "VDB-374486 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
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          "url": "https://vuldb.com/vuln/374486/cti"
        },
        {
          "name": "CVE-2026-13489 | CVE Analysis and Report",
          "tags": [
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          ],
          "url": "https://vuldb.com/cve/CVE-2026-13489"
        },
        {
          "name": "Submit #838198 | 78 xiaozhi-esp32 36200942cca3f7cbac6c927ce7458bad874297ab Information Exposure / Improper Routing",
          "tags": [
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          "url": "https://vuldb.com/submit/838198"
        },
        {
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          "url": "https://github.com/78/xiaozhi-esp32/issues/2020"
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          "url": "https://github.com/78/xiaozhi-esp32/pull/2021"
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          "time": "2026-06-27T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
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          "lang": "en",
          "time": "2026-06-27T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-06-27T17:55:29.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "78 xiaozhi-esp32 MCP Response mcp_server.cc ParseMessage improper synchronization"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-13489",
    "datePublished": "2026-06-28T10:45:08.559Z",
    "dateReserved": "2026-06-27T15:50:21.113Z",
    "dateUpdated": "2026-06-28T10:45:08.559Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-13489\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-06-28T12:17:03.170\",\"lastModified\":\"2026-06-28T12:17:03.170\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A weakness has been identified in 78 xiaozhi-esp32 up to 2.2.6. Affected by this issue is the function ParseMessage of the file main/mcp_server.cc of the component MCP Response Handler. This manipulation causes improper synchronization. Remote exploitation of the attack is possible. The attack\u0027s complexity is rated as high. The exploitation is known to be difficult. The exploit has been made available to the public and could be used for attacks. The pull request to fix this issue awaits acceptance.\"}],\"affected\":[{\"source\":\"cna@vuldb.com\",\"affectedData\":[{\"vendor\":\"78\",\"product\":\"xiaozhi-esp32\",\"cpes\":[\"cpe:2.3:a:78:xiaozhi-esp32:*:*:*:*:*:*:*:*\"],\"modules\":[\"MCP Response Handler\"],\"versions\":[{\"version\":\"2.2.0\",\"status\":\"affected\"},{\"version\":\"2.2.1\",\"status\":\"affected\"},{\"version\":\"2.2.2\",\"status\":\"affected\"},{\"version\":\"2.2.3\",\"status\":\"affected\"},{\"version\":\"2.2.4\",\"status\":\"affected\"},{\"version\":\"2.2.5\",\"status\":\"affected\"},{\"version\":\"2.2.6\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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\",\"baseScore\":1.3,\"baseSeverity\":\"LOW\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"LOW\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"PROOF_OF_CONCEPT\",\"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\":\"cna@vuldb.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":3.1,\"baseSeverity\":\"LOW\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.6,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:H/Au:S/C:N/I:P/A:N\",\"baseScore\":2.1,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"HIGH\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-662\"}]}],\"references\":[{\"url\":\"https://github.com/78/xiaozhi-esp32/\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/78/xiaozhi-esp32/issues/2020\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/78/xiaozhi-esp32/pull/2021\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/cve/CVE-2026-13489\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/submit/838198\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/374486\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/374486/cti\",\"source\":\"cna@vuldb.com\"}]}}"
  }
}


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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.