Vulnerability-Lookup

CVE-2026-55102 (GCVE-0-2026-55102)

Vulnerability from cvelistv5 – Published: 2026-09-14 16:58 – Updated: 2026-09-14 17:18

Title

hashi-vault-js: Vault token and secret values exposed in thrown errors

Summary

hashi-vault-js is a Node.js module for interacting with the HashiCorp Vault API. Prior to 0.5.2, every API method in src/Vault.js passes failed requests through parseAxiosError(), which rethrows the raw AxiosError while retaining AxiosError.config and the equivalent response configuration. These objects can contain the X-Vault-Token request header and err.config.data request body, including submitted passwords or secret values. When a consuming application records the caught exception through console logging, structured loggers, monitoring, crash reporting, or an application performance monitoring service, the live Vault token and request secrets can be stored in plaintext and exposed to anyone with access to that output. A stolen token can permit unauthorized access to the Vault instance under the token's policies. This issue is fixed in version 0.5.2.

Severity

5.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-14 17:18 UTC

CWE

CWE-209 - Generation of Error Message Containing Sensitive Information
CWE-532 - Insertion of Sensitive Information into Log File

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/kyndryl-open-source/hashi-vaul…	x_refsource_CONFIRM
https://github.com/kyndryl-open-source/hashi-vaul…	x_refsource_MISC
https://github.com/kyndryl-open-source/hashi-vaul…	x_refsource_MISC
https://github.com/kyndryl-open-source/hashi-vaul…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
kyndryl-open-source	hashi-vault-js	Affected: < 0.5.2	guessed

Show details on NVD website

JSON

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FKIE_CVE-2026-55102

Vulnerability from fkie_nvd - Published: 2026-09-14 17:17 - Updated: 2026-09-14 18:17

Severity

5.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/kyndryl-open-source/hashi-vault-js/commit/ed0797a2d09c1fe0fd20764dde66cbc29241d9fb
	security-advisories@github.com	https://github.com/kyndryl-open-source/hashi-vault-js/pull/67
	security-advisories@github.com	https://github.com/kyndryl-open-source/hashi-vault-js/releases/tag/v0.5.2
	security-advisories@github.com	https://github.com/kyndryl-open-source/hashi-vault-js/security/advisories/GHSA-5pq8-3ffp-7w5m

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "hashi-vault-js",
          "vendor": "kyndryl-open-source",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.5.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "hashi-vault-js is a Node.js module for interacting with the HashiCorp Vault API. Prior to 0.5.2, every API method in src/Vault.js passes failed requests through parseAxiosError(), which rethrows the raw AxiosError while retaining AxiosError.config and the equivalent response configuration. These objects can contain the X-Vault-Token request header and err.config.data request body, including submitted passwords or secret values. When a consuming application records the caught exception through console logging, structured loggers, monitoring, crash reporting, or an application performance monitoring service, the live Vault token and request secrets can be stored in plaintext and exposed to anyone with access to that output. A stolen token can permit unauthorized access to the Vault instance under the token\u0027s policies. This issue is fixed in version 0.5.2."
    }
  ],
  "id": "CVE-2026-55102",
  "lastModified": "2026-09-14T18:17:54.957",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.8,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
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          "subAvailabilityImpact": "NONE",
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      "url": "https://github.com/kyndryl-open-source/hashi-vault-js/releases/tag/v0.5.2"
    },
    {
      "source": "security-advisories@github.com",
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    }
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  "vulnStatus": "Received",
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}

GHSA-5PQ8-3FFP-7W5M

Vulnerability from github – Published: 2026-08-13 14:14 – Updated: 2026-08-13 14:14

Summary

hashi-vault-js: Vault token and secret values exposed in thrown errors

Details

Summary

Vault token and secret values are exposed in thrown errors when using hashi-vault-js.

Details

Every API method in Vault.js executes throw parseAxiosError(err), which returns the raw AxiosError untouched. That error carries the full Axios configuration, including the X-Vault-Token header and the request body. Consuming applications that log caught errors (e.g., using console.error, pino, winston, Sentry, or APMs) inadvertently log the live Vault token in plaintext. Furthermore, write-path methods expose submitted passwords and secret values via err.config.data.

Impact

When consuming applications log intercepted exceptions, sensitive credentials such as tokens, passwords, and secrets are unknowingly exposed to application logs, monitoring services, and APM systems via the raw AxiosError. This may lead to authorization bypass or unauthorized access to the underlying Vault instance.

Patches

This vulnerability should be addressed by redacting err.config.headers['X-Vault-Token'] and err.config.data before re-throwing, or by throwing a purpose-built error containing only safe properties like status and message. Users should upgrade to a version that includes this fix.

Workarounds

If users cannot immediately update the library, they can mitigate this issue by capturing all exceptions thrown by hashi-vault-js and sanitizing or omitting the err.config object before passing the errors to logging utilities or crash reporters.

Acknowledgements

hashi-vault-js would like to thank Sebastián Alba Vives for reporting this vulnerability.

Resources

Show details on source website

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.5.1"
      },
      "package": {
        "ecosystem": "npm",
        "name": "hashi-vault-js"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-55102"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-209",
      "CWE-532"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-13T14:14:32Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nVault token and secret values are exposed in thrown errors when using `hashi-vault-js`.\n\n## Details\n\nEvery API method in `Vault.js` executes `throw parseAxiosError(err)`, which returns the raw `AxiosError` untouched. That error carries the full Axios configuration, including the `X-Vault-Token` header and the request body. Consuming applications that log caught errors (e.g., using `console.error`, `pino`, `winston`, Sentry, or APMs) inadvertently log the live Vault token in plaintext. Furthermore, write-path methods expose submitted passwords and secret values via `err.config.data`.\n\n## Impact\n\nWhen consuming applications log intercepted exceptions, sensitive credentials such as tokens, passwords, and secrets are unknowingly exposed to application logs, monitoring services, and APM systems via the raw `AxiosError`. This may lead to authorization bypass or unauthorized access to the underlying Vault instance.\n\n## Patches\n\nThis vulnerability should be addressed by redacting `err.config.headers[\u0027X-Vault-Token\u0027]` and `err.config.data` before re-throwing, or by throwing a purpose-built error containing only safe properties like status and message. Users should upgrade to a version that includes this fix.\n\n## Workarounds\n\nIf users cannot immediately update the library, they can mitigate this issue by capturing all exceptions thrown by `hashi-vault-js` and sanitizing or omitting the `err.config` object before passing the errors to logging utilities or crash reporters.\n\n## Acknowledgements\nhashi-vault-js would like to thank Sebasti\u00e1n Alba Vives for reporting this vulnerability.\n\n## Resources\n\n- [CWE-532: Insertion of Sensitive Information into Log File](https://cwe.mitre.org/data/definitions/532.html)\n- [CWE-209: Generation of Error Message Containing Sensitive Information](https://cwe.mitre.org/data/definitions/209.html)",
  "id": "GHSA-5pq8-3ffp-7w5m",
  "modified": "2026-08-13T14:14:32Z",
  "published": "2026-08-13T14:14:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kyndryl-open-source/hashi-vault-js/security/advisories/GHSA-5pq8-3ffp-7w5m"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kyndryl-open-source/hashi-vault-js"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "hashi-vault-js: Vault token and secret values exposed in thrown errors"
}

Sightings

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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

CVE-2026-55102 (GCVE-0-2026-55102)

FKIE_CVE-2026-55102

GHSA-5PQ8-3FFP-7W5M

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