CVE-2023-26045 — Vulnerability in nodebb — CVE Details

CRITICAL

Path traversal and code execution via prototype vulnerability

Published July 25, 2023Updated September 10, 2026Source: osv

Summary

### Impact Due to the use of the [object destructuring assignment](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment) syntax in the user export code path, combined with a path traversal vulnerability, a specially crafted payload could invoke the user export logic to arbitrarily execute javascript files on the local disk. ### Patches Patched in v2.8.7 ### Workarounds Site maintainers can cherry pick ec58700f6dff8e5b4af1544f6205ec362b593092 into their codebase to patch the exploit.

Advisory Timeline

First published July 25, 2023 (1175 days ago).
Last revised September 10, 2026 — 1143 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm

Update nodebb to 2.8.7 or later

npm install nodebb@2.8.7

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: npm (1).

Package	Ecosystem	Affected	Fixed In
nodebb	npm	All versions	2.8.7

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-22
Path TraversalMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 10.0 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2023-26045?: Path traversal and code execution via prototype vulnerability This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 10.0/10).
How do I check if my project is affected by CVE-2023-26045?: CVE-2023-26045 affects nodebb. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2023-26045 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

10.0

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-vh2g-6c4x-5hmp

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