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VulnerabilityPublished

CVE-2026-119192: Forge · RSA PKCS#1 v1.5 signature forgery via non-canonical DigestInfo encoding

Affects node-forgeSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited · CVSS 7.5 High : upgrade to 1.4.1 soon.

Data as of 10 Nov 2026, 17:35 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.4.1
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 10 Nov 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 10 Nov 2026.

What to do

Upgrade node-forge to 1.4.1.

Affected software

ProductAffectedFixed in
npmnode-forgeAffected
  • <1.4.1
Fixed in
  • 1.4.1

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

AI-suggested

Upgrade node-forge to version 1.4.1 or later, where the vulnerability is fixed by enforcing strict DER encoding checks on DigestInfo during signature verification. Alternatively, avoid using RSA keys with a low public exponent (e=3) for signature verification until the upgrade is applied.

Description

A vulnerability in node-forge before version 1.4.1 allows RSA PKCS#1 v1.5 signature forgery due to acceptance of non-canonical BER encodings of the DigestInfo during signature verification. This flaw affects verification of signatures using RSA keys with a low public exponent (e=3), enabling attackers to forge signatures without the private key. The issue is fixed in node-forge 1.4.1 by enforcing strict DER encoding checks on DigestInfo.

References

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