CVE-2026-58578 (GCVE-0-2026-58578)

Vulnerability from cvelistv5 – Published: 2026-07-02 19:38 – Updated: 2026-07-02 19:38 X_Open Source
VLAI?
Title
LobeChat < 2.2.10-canary.15 - Regular Expression Denial of Service in GitHub Skill Import
Summary
LobeChat before version 2.2.10-canary.15 contains a regular expression denial of service (ReDoS) vulnerability that allows authenticated attackers to block the Node.js event loop by supplying a catastrophic-backtracking pattern in a GitHub repository URL path during skill import. Attackers can craft a malicious basePath value containing unescaped regex metacharacters such as catastrophic-backtracking patterns, which are injected into a dynamically constructed regular expression in the findSkillMd function and executed synchronously against archive entries, denying service to all concurrent users for tens of seconds per request.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
Vendor Product Version
lobehub lobehub Affected: 0 , < 2.2.10-canary.15 (custom)
Create a notification for this product.
Credits
George Chen
Show details on NVD website
To clipboard 

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          "repo": "https://github.com/lobehub/lobehub",
          "vendor": "lobehub",
          "versions": [
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              "version": "0",
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      ],
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          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:a:lobehub:lobehub:*:*:*:*:*:node.js:*:*",
                  "versionEndExcluding": "2.2.10-canary.15",
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        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
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            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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      "providerMetadata": {
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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      "references": [
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          "name": "Release Notes",
          "tags": [
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          "url": "https://github.com/lobehub/lobehub/releases/tag/v2.2.10-canary.15"
        },
        {
          "name": "Researcher Disclosure",
          "tags": [
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          "url": "https://github.com/lobehub/lobehub/issues/16494"
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        {
          "name": "Fix PR",
          "tags": [
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          "url": "https://github.com/lobehub/lobehub/pull/16548"
        },
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          "name": "Fix Commit",
          "tags": [
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          "url": "https://github.com/lobehub/lobehub/commit/349bbe326eb8635d6d9c6a96d12702681ae3a84a"
        },
        {
          "tags": [
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          "url": "https://www.vulncheck.com/advisories/lobechat-canary-15-regular-expression-denial-of-service-in-github-skill-import"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "title": "LobeChat \u003c 2.2.10-canary.15 - Regular Expression Denial of Service in GitHub Skill Import",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-58578",
    "datePublished": "2026-07-02T19:38:21.378Z",
    "dateReserved": "2026-07-01T15:00:11.163Z",
    "dateUpdated": "2026-07-02T19:38:21.378Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.