CVE-2026-100541 (GCVE-0-2026-100541)

Vulnerability from cvelistv5 – Published: 2026-09-26 02:18 – Updated: 2026-09-26 02:18
VLAI
Title
OpenClaw Matrix before 2026.8.1 Authorization Bypass via Case Folding
Summary
OpenClaw's Matrix integration (npm package @openclaw/matrix) versions >= 2026.2.2 and < 2026.8.1 lowercase complete Matrix user IDs — including historical localparts and the case-sensitive server-name portion — when deriving the OpenClaw authorization identity. As a result, distinct authenticated Matrix accounts can normalize to the same authorization identity. A Matrix participant controlling a colliding account identifier (a protocol-valid identifier that differs from the configured one only by characters OpenClaw case/Unicode folds; display-name matching is not required) can inherit allowlist, owner-command, exec-approval, or plugin-approval authority configured for another account. The issue is fixed in 2026.8.1.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
Assigner
References
Impacted products
Vendor Product Version CPE status
openclaw matrix Affected: 2026.2.2 , < 2026.8.1 (semver)
Unaffected: 2026.8.1 (semver)
guessed Create a notification for this product.
Date Public
2026-09-11 00:00
Show details on NVD website
To clipboard 

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      "references": [
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          "name": "GitHub Security Advisory (GHSA-hgv5-f2r3-6v9r)",
          "tags": [
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          "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-hgv5-f2r3-6v9r"
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    "datePublished": "2026-09-26T02:18:39.224Z",
    "dateReserved": "2026-09-26T01:01:36.095Z",
    "dateUpdated": "2026-09-26T02:18:39.224Z",
    "state": "PUBLISHED"
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          }
        ],
        "id": "CVE-2026-100541",
        "lastModified": "2026-09-26T03:16:59.987",
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                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
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                "valueDensity": "NOT_DEFINED",
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}



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