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CVE-2026-118780 · CVE record: PUBLISHED

Forge: verifyCertificateChain() removes trusted CA certificates with the same subject from the CA store

digitalbazaar forge

Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used pki.verifyCertificateChain(), pki.createCaStore(), duplicate subject names to process the relevant input or security decision. node-forge modified the CA store while trying certificates that shared a subject name during pki.verifyCertificateChain(). A failed chain verification could permanently remove trusted CA certificates from the store, causing later valid chains to fail and creating a persistent availability impact for applications that reused the store. This issue is fixed in version 1.4.1.

Exploitation evidence

Not listed in the latest downloaded CISA KEV catalog. This does not establish an absence of exploitation.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

digitalbazaar / forge

Default status: Not specified

affected: < 1.4.1

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Monitored source mentions

GitHub Advisory Database — Forge: verifyCertificateChain() removes trusted CA certificates with the same subject from the CA store ↗

Shared CVE identifiers link source mentions; they do not establish that the reports describe the same incident.

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.00178,
  "percentile": 0.07444
}

10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.00172,
  "percentile": 0.06669
}

09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.00172,
  "percentile": 0.0664
}

08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.00172,
  "percentile": 0.06644
}

07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.00172,
  "percentile": 0.06647
}

06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.00172,
  "percentile": 0.06662
}

06 Nov 2026, 06:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.00172,
  "percentile": 0.06652
}

04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.00172,
  "percentile": 0.0665
}

04 Nov 2026, 12:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

{
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                "id": "CVE-2026-118780",
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-04T01:36:38.095925Z",
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        "references": [
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            "url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-4487-j8r4-4g2f"
          }
        ],
        "title": "CISA ADP Vulnrichment"
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    ],
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      ],
      "source": {
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        "discovery": "UNKNOWN"
      },
      "title": "Forge: verifyCertificateChain() removes trusted CA certificates with the same subject from the CA store"
    }
  },
  "cveMetadata": {
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03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.00172,
  "percentile": 0.06632
}

03 Nov 2026, 06:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.00172,
  "percentile": 0.06581
}

03 Nov 2026, 06:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "forge",
          "vendor": "digitalbazaar",
          "versions": [
            {
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            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
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          ]
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        {
          "descriptions": [
            {
              "cweId": "CWE-471",
              "description": "CWE-471: Modification of Assumed-Immutable Data (MAID)",
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            }
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      ],
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      },
      "references": [
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          "name": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-4487-j8r4-4g2f",
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          ],
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          "name": "https://github.com/digitalbazaar/forge/commit/f6555609bd30f442fbfacd543155928ceccf98d0",
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      ],
      "source": {
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      "title": "Forge: verifyCertificateChain() removes trusted CA certificates with the same subject from the CA store"
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    "state": "PUBLISHED"
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}

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