CVE-2026-36045: Github.com/sipeed/picoclaw Picoclaw Is Vulnerable To OS Vulnerability

HIGH
Advisory Identifier: GHSA-cv2p-68f4-f4pw
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CVSS 7.3
CWE-78
Published
Advisory Summary

CVE-2026-36045 is a HIGH (CVSS 7.3) picoclaw is vulnerable to os vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Github.com/sipeed/picoclaw libraries in the Go ecosystem. The issue involves picoclaw is vulnerable to os command injection via the exectool component. Remediation is available in the latest vendor maintenance releases.

CVE-2026-36045 at a Glance

CVE Identifier CVE-2026-36045
GHSA Identifier GHSA-cv2p-68f4-f4pw
Severity HIGH
CVSS v3.1 Base Score 7.3
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Github.com/sipeed/picoclaw
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.3

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:L/I:L/A:L).

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 Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-36045

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

github.com/sipeed/picoclaw fixed: Latest secure release 
Upgrade github.com/sipeed/picoclaw to Latest secure release
Verify Direct and Transitive Dependencies

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

inspect dependencies for github.com/sipeed/picoclaw

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-36045, inspect your project dependencies for Github.com/sipeed/picoclaw:

inspect dependencies for github.com/sipeed/picoclaw

Analyze the terminal output to locate any version of Github.com/sipeed/picoclaw in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Github.com/sipeed/picoclaw, 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

picoclaw <=v0.1.2 and earlier is vulnerable to OS command injection via the ExecTool component (pkg/tools/shell.go). The guardCommand() function attempts to restrict shell command execution using a denylist of 8 regular expressions, but the denylist is incomplete.

CVE-2026-36045 Affected Github.com/sipeed/picoclaw Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
github.com/sipeed/picoclaw
golang/github.com/sipeed/picoclaw
Go
≤ 0.1.2

References

NVD — CVE-2026-36045 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-36045
Security Fix Commit FIX COMMIT
https://github.com/sipeed/picoclaw/commit/01d694b9985a66c3d7119fc9f74ce8ed4f0f21b5
Github.com/sipeed/picoclaw Source Repository REPOSITORY
https://gist.github.com/NucleiAv/41899be6266a9813840301577792ed68
Github.com/sipeed/picoclaw Source Repository REPOSITORY
https://github.com/sipeed/picoclaw
Github.com/sipeed/picoclaw Release RELEASE
https://github.com/sipeed/picoclaw/releases/tag/v0.1.2

Frequently Asked Questions

What is CVE-2026-36045?
CVE-2026-36045 is a security vulnerability in Github.com/sipeed/picoclaw involving picoclaw is vulnerable to OS command injection via the ExecTool component under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Github.com/sipeed/picoclaw versions are affected?
Affected versions include releases prior to current release patches across affected packages: github.com/sipeed/picoclaw.
What version fixes CVE-2026-36045?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/sipeed/picoclaw affected?
Yes, github.com/sipeed/picoclaw is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-36045?
CVE-2026-36045 has a CVSS v3.1 base score of 7.3 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-36045?
CVE-2026-36045 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check Go dependencies for CVE-2026-36045?
Run the dependency tree command: 'inspect dependencies for github.com/sipeed/picoclaw'. 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-cv2p-68f4-f4pw",
  "modified" : "2026-07-01T19:06:33Z",
  "published" : "2026-05-27T15:33:11Z",
  "aliases" : [ "CVE-2026-36045" ],
  "summary" : "picoclaw is vulnerable to OS command injection via the ExecTool component",
  "details" : "picoclaw <=v0.1.2 and earlier is vulnerable to OS command injection via the ExecTool component (pkg/tools/shell.go). The guardCommand() function attempts to restrict shell command execution using a denylist of 8 regular expressions, but the denylist is incomplete.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/sipeed/picoclaw"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.1.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-36045"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sipeed/picoclaw/commit/01d694b9985a66c3d7119fc9f74ce8ed4f0f21b5"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/NucleiAv/41899be6266a9813840301577792ed68"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/sipeed/picoclaw"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sipeed/picoclaw/releases/tag/v0.1.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-01T19:06:33Z",
    "nvd_published_at" : "2026-05-27T14:16:45Z"
  }
}