FKIE_CVE-2026-22036

Vulnerability from fkie_nvd - Published: 2026-01-14 19:16 - Updated: 2026-01-22 21:15
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Undici is an HTTP/1.1 client for Node.js. Prior to 7.18.0 and 6.23.0, the number of links in the decompression chain is unbounded and the default maxHeaderSize allows a malicious server to insert thousands compression steps leading to high CPU usage and excessive memory allocation. This vulnerability is fixed in 7.18.0 and 6.23.0.
References
security-advisories@github.comhttps://github.com/nodejs/undici/commit/b04e3cbb569c1596f86c108e9b52c79d8475dcb3Patch
security-advisories@github.comhttps://github.com/nodejs/undici/security/advisories/GHSA-g9mf-h72j-4rw9Vendor Advisory
Impacted products
Vendor Product Version
nodejs undici *
nodejs undici *
To clipboard 

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    }
  ],
  "id": "CVE-2026-22036",
  "lastModified": "2026-01-22T21:15:50.070",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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