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GHSA-C6HR-W26Q-C636

Vulnerability from github – Published: 2026-03-02 22:17 – Updated: 2026-03-19 18:33
VLAI
Summary
OpenClaw has ReDoS and regex injection via unescaped Feishu mention metadata in RegExp construction
Details

Summary

extensions/feishu/src/bot.ts constructed new RegExp() directly from Feishu mention metadata (mention.name, mention.key) in stripBotMention() without escaping regex metacharacters.

Affected Packages / Versions

  • Package: npm openclaw
  • Affected versions: <= 2026.2.17
  • First affected release: 2026.2.6
  • Patched version: 2026.2.19

Impact

  • ReDoS: crafted nested-quantifier patterns in mention metadata can trigger catastrophic backtracking and block message processing.
  • Regex injection: metacharacters in mention metadata can remove unintended message content before it is sent to the model.

Fix Commit(s)

  • 7e67ab75cc2f0e93569d12fecd1411c2961fcc8c
  • 74268489137510b6f6349919d1e197b17290d92c

Thanks @allsmog for reporting.

Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "openclaw"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2026.2.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-22178"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-02T22:17:30Z",
    "nvd_published_at": "2026-03-18T02:16:22Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\n`extensions/feishu/src/bot.ts` constructed `new RegExp()` directly from Feishu mention metadata (`mention.name`, `mention.key`) in `stripBotMention()` without escaping regex metacharacters.\n\n## Affected Packages / Versions\n\n- Package: npm `openclaw`\n- Affected versions: `\u003c= 2026.2.17`\n- First affected release: `2026.2.6`\n- Patched version: `2026.2.19`\n\n## Impact\n\n- ReDoS: crafted nested-quantifier patterns in mention metadata can trigger catastrophic backtracking and block message processing.\n- Regex injection: metacharacters in mention metadata can remove unintended message content before it is sent to the model.\n\n## Fix Commit(s)\n\n- `7e67ab75cc2f0e93569d12fecd1411c2961fcc8c`\n- `74268489137510b6f6349919d1e197b17290d92c`\n\nThanks @allsmog for reporting.",
  "id": "GHSA-c6hr-w26q-c636",
  "modified": "2026-03-19T18:33:51Z",
  "published": "2026-03-02T22:17:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-c6hr-w26q-c636"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22178"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/74268489137510b6f6349919d1e197b17290d92c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/7e67ab75cc2f0e93569d12fecd1411c2961fcc8c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/openclaw-redos-and-regex-injection-via-unescaped-feishu-mention-metadata"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw has ReDoS and regex injection via unescaped Feishu mention metadata in RegExp construction"
}



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