CVE-2026-35661: OpenClaw Telegram DM-Scoped Inline Button Callbacks Vulnerability

MODERATE
Advisory Identifier: GHSA-j4c9-w69r-cw33
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CVSS 5.3
CWE-285 CWE-288 CWE-863
Published
Advisory Summary

CVE-2026-35661 is a MODERATE (CVSS 5.3) telegram dm-scoped inline button callbacks vulnerability (CWE-285: Improper Authorization) affecting OpenClaw libraries in the npm ecosystem. The issue involves telegram dm-scoped inline button callbacks bypass dm pairing and mutate session state. Remediation is available by upgrading affected packages to version 2026.3.28.

CVE-2026-35661 at a Glance

CVE Identifier CVE-2026-35661
GHSA Identifier GHSA-j4c9-w69r-cw33
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-285: Improper Authorization
Affected Product OpenClaw
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-35661

To remediate this vulnerability, upgrade all affected OpenClaw dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

openclaw fixed: 2026.3.28 
npm install openclaw@2026.3.28
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls openclaw

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-35661, inspect your project dependencies using npm:

npm ls openclaw

Analyze the terminal output to locate any version of OpenClaw in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.3.28), your application is affected.

Note: The npm ls openclaw command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-285: Improper Authorization, where the product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. In OpenClaw, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary Telegram DM-Scoped Inline Button Callbacks Bypass DM Pairing and Mutate Session State ## Affected Packages / Versions - Package: `openclaw` - Affected versions: `<= 2026.3.24` - First patched version: `2026.3.25` - Latest published npm version at verification time: `2026.3.24` ## Details Telegram callback queries from direct messages previously used weaker callback-only authorization and could mutate session state without satisfying normal DM pairing. Commit `269282ac69ab6030d5f30d04822668f607f13065` enforces DM authorization for callbacks. Verified vulnerable on tag `v2026.3.24` and fixed on `main` by commit `269282ac69ab6030d5f30d04822668f607f13065`. ## Fix Commit(s) - `269282ac69ab6030d5f30d04822668f607f13065`

CVE-2026-35661 Affected OpenClaw Versions

1 component(s)
Fixed Versions:
2026.3.28
Product / Package Ecosystem Affected Versions Fixed Version
openclaw
npm/openclaw
npm
< 2026.3.28
2026.3.28

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openclaw/openclaw/security/advisories/GHSA-j4c9-w69r-cw33
NVD — CVE-2026-35661 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35661
Security Fix Commit FIX COMMIT
https://github.com/openclaw/openclaw/commit/269282ac69ab6030d5f30d04822668f607f13065
OpenClaw Source Repository REPOSITORY
https://github.com/openclaw/openclaw
www.vulncheck.com/advisories/openclaw... WEB
https://www.vulncheck.com/advisories/openclaw-telegram-dm-scoped-inline-button-callback-authorization-bypass

Frequently Asked Questions

What is CVE-2026-35661?
CVE-2026-35661 is a security vulnerability in OpenClaw involving Telegram DM-Scoped Inline Button Callbacks Bypass DM Pairing and Mutate Session State under CWE-285: Improper Authorization.
Which OpenClaw versions are affected?
Affected versions include releases prior to 2026.3.28 across affected packages: openclaw.
What version fixes CVE-2026-35661?
Upgrading to 2026.3.28 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openclaw affected?
Yes, openclaw is affected in releases prior to 2026.3.28. Upgrade your dependency to 2026.3.28 or later.
What is the CVSS score of CVE-2026-35661?
CVE-2026-35661 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2026-35661?
CVE-2026-35661 is classified under CWE-285: Improper Authorization (The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.).
How can I check npm dependencies for CVE-2026-35661?
Run the dependency tree command: 'npm ls openclaw'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j4c9-w69r-cw33",
  "modified" : "2026-04-10T19:43:56Z",
  "published" : "2026-03-29T15:50:23Z",
  "aliases" : [ "CVE-2026-35661" ],
  "summary" : "OpenClaw: Telegram DM-Scoped Inline Button Callbacks Bypass DM Pairing and Mutate Session State",
  "details" : "## Summary\n\nTelegram DM-Scoped Inline Button Callbacks Bypass DM Pairing and Mutate Session State\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Affected versions: `<= 2026.3.24`\n- First patched version: `2026.3.25`\n- Latest published npm version at verification time: `2026.3.24`\n\n## Details\n\nTelegram callback queries from direct messages previously used weaker callback-only authorization and could mutate session state without satisfying normal DM pairing. Commit `269282ac69ab6030d5f30d04822668f607f13065` enforces DM authorization for callbacks.\n\nVerified vulnerable on tag `v2026.3.24` and fixed on `main` by commit `269282ac69ab6030d5f30d04822668f607f13065`.\n\n## Fix Commit(s)\n\n- `269282ac69ab6030d5f30d04822668f607f13065`",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "openclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2026.3.28"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2026.3.24"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-j4c9-w69r-cw33"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35661"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/openclaw/commit/269282ac69ab6030d5f30d04822668f607f13065"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/openclaw"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/openclaw-telegram-dm-scoped-inline-button-callback-authorization-bypass"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-288", "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-29T15:50:23Z",
    "nvd_published_at" : "2026-04-10T17:17:07Z"
  }
}