CVE-2026-33894

Name: CVE-2026-33894
Creator: NVD / NIST
Published: 2026-03-27T21:17:25.983+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.24%

Last modified Jun 17, 2026

CVE-2026-33894 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, RSASSA PKCS#1 v1.5 signature verification accepts forged signatures for low public exponent keys (e=3). EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, RSASSA PKCS#1 v1.5 signature verification accepts forged signatures for low public exponent keys (e=3). Attackers can forge signatures by stuffing “garbage” bytes within the ASN structure in order to construct a signature that passes verification, enabling Bleichenbacher style forgery. This issue is similar to CVE-2022-24771, but adds bytes in an addition field within the ASN structure, rather than outside of it. Additionally, forge does not validate that signatures include a minimum of 8 bytes of padding as defined by the specification, providing attackers additional space to construct Bleichenbacher forgeries. Version 1.4.0 patches the issue.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.24%

15.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Digitalbazaar	Forge	< 1.4.0

References

https://datatracker.ietf.org/doc/html/rfc2313#section-8Third Party Advisory
https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwpVendor Advisory
https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwpVendor Advisory
https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwpVendor Advisory
https://github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwpVendor Advisory
https://mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QEThird Party Advisory
https://www.rfc-editor.org/rfc/rfc8017.htmlThird Party Advisory

Timeline

Published: Mar 27, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-33894?

How severe is CVE-2026-33894?

CVE-2026-33894 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.

How do I fix CVE-2026-33894?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-33894?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST