Bug 2452464 (CVE-2026-33894) - CVE-2026-33894 node-forge: Forge: Signature Forgery via Weak RSASSA PKCS#1 v1.5 Verification
Summary: CVE-2026-33894 node-forge: Forge: Signature Forgery via Weak RSASSA PKCS#1 v1...
Keywords:
Status: NEW
Alias: CVE-2026-33894
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2452498 2452493 2452494 2452495 2452496 2452497
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-27 21:03 UTC by OSIDB Bzimport
Modified: 2026-11-05 09:55 UTC (History)
44 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:24761 0 None None None 2026-06-09 11:03:34 UTC

Description OSIDB Bzimport 2026-03-27 21:03:16 UTC 
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.
Comment 2 errata-xmlrpc 2026-06-09 11:03:31 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.5 for RHEL 9
  Red Hat Ansible Automation Platform 2.5 for RHEL 8

Via RHSA-2026:24761 https://access.redhat.com/errata/RHSA-2026:24761
Comment 4 Elsajack36 2026-11-05 09:55:37 UTC 
Thanks for sharing the details of this vulnerability. Security issues like this are a good reminder of why keeping software updated and reviewing dependencies carefully is so important. Clear and reliable information also helps people make better decisions when dealing with online services, whether related to software security or public-service guidance such as https://sassa-status.web.za/.
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