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CVE-2026-33894 (GCVE-0-2026-33894)

Vulnerability from cvelistv5 – Published: 2026-03-27 20:45 – Updated: 2026-09-10 12:04
VLAI
Title
Forge has signature forgery in RSA-PKCS due to ASN.1 extra field
Summary
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.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-31 14:04 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
  • CWE-20 - Improper Input Validation
Impacted products
Vendor Product Version CPE status
digitalbazaar forge Affected: < 1.4.0
guessed Create a notification for this product.
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8 Unaffected: 0:2.5.20260422-3.el8ap , < * (rpm)
    cpe:/a:redhat:ansible_automation_platform:2.5::el8
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Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 9 Unaffected: 0:2.5.20260422-3.el9ap , < * (rpm)
    cpe:/a:redhat:ansible_automation_platform:2.5::el9
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Red Hat Cluster Observability Operator 1.5.0 Unaffected: 1782839279 , < * (rpm)
    cpe:/a:redhat:cluster_observability_operator:1.5::el9
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Red Hat Red Hat Developer Hub 1.8 Unaffected: 1776784286 , < * (rpm)
    cpe:/a:redhat:rhdh:1.8::el9
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Red Hat Red Hat Developer Hub 1.9 Unaffected: 1777903262 , < * (rpm)
    cpe:/a:redhat:rhdh:1.9::el9
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Red Hat Red Hat Quay 3.10 Unaffected: 1779822261 , < * (rpm)
    cpe:/a:redhat:quay:3.10::el8
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Red Hat Red Hat Quay 3.12 Unaffected: 1779811412 , < * (rpm)
    cpe:/a:redhat:quay:3.12::el8
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Red Hat Red Hat Quay 3.14 Unaffected: 1779689392 , < * (rpm)
    cpe:/a:redhat:quay:3.14::el8
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Red Hat Red Hat Quay 3.15 Unaffected: 1780891395 , < * (rpm)
    cpe:/a:redhat:quay:3.15::el8
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Red Hat Red Hat Quay 3.16 Unaffected: 1779204086 , < * (rpm)
    cpe:/a:redhat:quay:3.16::el9
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Red Hat Red Hat Quay 3.17 Unaffected: 1779922205 , < * (rpm)
    cpe:/a:redhat:quay:3.17::el9
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Red Hat Red Hat Quay 3.9 Unaffected: 1779811473 , < * (rpm)
    cpe:/a:redhat:quay:3.9::el8
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Red Hat Cryostat 4     cpe:/a:redhat:cryostat:4
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Red Hat Logging Subsystem for Red Hat OpenShift     cpe:/a:redhat:logging:5
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Red Hat Red Hat Ansible Automation Platform 2     cpe:/a:redhat:ansible_automation_platform:2
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Red Hat Red Hat build of Apache Camel - HawtIO 4     cpe:/a:redhat:apache_camel_hawtio:4
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Red Hat Red Hat build of Apicurio Registry 2     cpe:/a:redhat:service_registry:2
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Red Hat Red Hat Build of Podman Desktop     cpe:/a:redhat:podman_desktop:1
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Red Hat Red Hat Data Grid 8     cpe:/a:redhat:jboss_data_grid:8
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat Fuse 7     cpe:/a:redhat:jboss_fuse:7
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Red Hat Red Hat Process Automation 7     cpe:/a:redhat:jboss_enterprise_bpms_platform:7
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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