# CVE-2026-118782: Forge: PKCS#12 MAC forgery and constant-key PBE via zero iteration count

Status: published. Published: 2026-10-29. Updated: 2026-11-03.

Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, node-forge accepted a PKCS#12 MAC or PKCS#12 password-based encryption iteration count of zero or less. pki.pbe.generatePkcs12Key() then returned a constant key independent of the password and salt, allowing crafted PKCS#12 input processed by forge.pkcs12.pkcs12FromAsn1() to bypass password-based integrity checks. Predictable encryption keys and IVs also affected PKCS#12 PBE using pbeWithSHAAnd3-KeyTripleDES-CBC or pbewithSHAAnd40BitRC2-CBC, including shrouded key bags, encrypted SafeContents, and PKCS#8 ENCRYPTED PRIVATE KEY input processed independently by forge.pki.decryptPrivateKeyInfo(). PBES2/PBKDF2-encrypted content is unaffected. This issue is fixed in version 1.4.1.

## Remediation

- fix: node-forge (npm): OSV reports a fixed version 1.4.1. Check the advisory for supported release branches. (source: OSV GHSA-jc66-7q78-782g) — https://github.com/advisories/GHSA-jc66-7q78-782g

## Affected products and versions

- digitalbazaar / forge: < 1.4.1 (affected). Source: CNA: GitHub_M
-  / node-forge (node-forge): ≥ 0; < 1.4.1 (affected, semver); OSV events: introduced 0; fixed 1.4.1. Source: OSV GHSA-jc66-7q78-782g

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N; source: CNA: GitHub_M

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: 0.13% as of 2026-11-03; percentile 2.23%

- SSVC: exploitation poc; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-354, CWE-1284

## Exploit evidence

- exploit: https://github.com/digitalbazaar/forge/security/advisories/GHSA-jc66-7q78-782g (ADP: CISA-ADP)

## References

- https://github.com/digitalbazaar/forge/security/advisories/GHSA-jc66-7q78-782g (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/digitalbazaar/forge/commit/d9584aa56824972858366d5187b3d29e46bf3656 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/digitalbazaar/forge/releases/tag/v1.4.1 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/digitalbazaar/forge/security/advisories/GHSA-jc66-7q78-782g (ADP: CISA-ADP; exploit)

- https://github.com/digitalbazaar/forge/commit/d9584aa56824972858366d5187b3d29e46bf3656 (security-advisories@github.com)

- https://github.com/digitalbazaar/forge/releases/tag/v1.4.1 (security-advisories@github.com)

- https://github.com/digitalbazaar/forge/security/advisories/GHSA-jc66-7q78-782g (security-advisories@github.com)

- https://github.com/digitalbazaar/forge/security/advisories/GHSA-jc66-7q78-782g (134c704f-9b21-4f2e-91b3-4a467353bcc0)

- https://github.com/advisories/GHSA-jc66-7q78-782g (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-jc66-7q78-782g (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-118782; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-118782; retrieved 2026-11-03; source updated 2026-11-03

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-jc66-7q78-782g; retrieved 2026-11-03; source updated 2026-10-30

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-118782; retrieved 2026-11-03; source updated Not reported

Revision: aac250d756f3a43225944f61dfaac96a191cec62501256587901bc2fbd90722d

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