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VulnerabilityPublished Updated

CVE-2026-33894: digitalbazaar forge · Improper Verification of Cryptographic Signature

Affects digitalbazaar forgeSource CVE Database V5

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Mentioned vulnerabilities

Not known to be exploited · CVSS 7.5 High : upgrade to 1.4.0 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.4.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade forge and digitalbazaar/forge to 1.4.0.

Affected software

ProductAffectedFixed in
digitalbazaarforgeAffected
  • <1.4.0
Fixed in
  • 1.4.0
npmdigitalbazaar/forgepkg:npm/digitalbazaar/forgeOther threatsAffected
  • <1.4.0
Fixed in
  • 1.4.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Version 1.4.0 of Forge patches this vulnerability. Users should upgrade to version 1.4.0 or later to remediate the issue. According to the Red Hat advisory, no alternative mitigations meet their criteria for ease of use and applicability, so upgrading is the recommended action.

Description

Forge (node-forge) versions prior to 1.4.0 contain a vulnerability in the RSASSA PKCS#1 v1.5 signature verification process. The flaw allows attackers to forge signatures by inserting extra data within the ASN structure and by exploiting insufficient padding validation, enabling Bleichenbacher-style signature forgeries. This compromises the integrity and authenticity of communications relying on these signatures. Version 1.4.0 addresses this issue.

References

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