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Fri, 04 Sep 2026 19:30:00 +0000
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ssvc
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Fri, 04 Sep 2026 17:00:00 +0000
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| Description | undici's dump interceptor reads and discards a response body up to a configurable maximum size. When a response declares a Content-Length that exceeds the maximum, the interceptor aborts cleanly, but when a response has no Content-Length and is chunked, the interceptor instead signals completion early once the accumulated size reaches the maximum, without pausing or aborting the request. Because the underlying parser keeps delivering body bytes, a second completion signal fires and trips an internal assertion, which aborts the request and tears down the connection. The application is left observing a misleading successful status with an empty or truncated body while the connection has actually been disconnected. This affects undici versions from 7.1.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2. | |
| Title | undici vulnerable to response truncation via oversized chunked responses in the dump interceptor | |
| Weaknesses | CWE-20 CWE-248 |
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cvssV3_1
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Subscriptions
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Status: PUBLISHED
Assigner: openjs
Published:
Updated: 2026-09-04T18:35:25.824Z
Reserved: 2026-09-02T17:08:36.395Z
Link: CVE-2026-84947
Updated: 2026-09-04T18:35:20.971Z
Status : Received
Published: 2026-09-04T17:17:02.103
Modified: 2026-09-04T19:17:30.277
Link: CVE-2026-84947
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OpenCVE Enrichment
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