MEDIUMCVSS v3.1 5.3Vulnerability
CVE-2026-121439
Wasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 contains a response splitting vulnerability in wasi-http p3 that allows guests to set unvalidated content-length headers. Malicious wasip3 guests can splice an existing body into a new response with an incorrect content-length to perform response splitting or injection attacks.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-03T17:20:13.885968+00:00
- Cvss score
- 5.3
- Cvss severity
- MEDIUM
- Retrieved at
- 2026-11-03T17:21:18+00:00
- Score
- 5.3
- Last source
- NVD
- Cvss version
- 3.1
- Cve id
- CVE-2026-121439
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- First seen by Signal
- 2026-11-03T17:21:18+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Published at
- 2026-11-03T15:17:35.507
- Last modified
- 2026-11-03T15:17:35.640
Related Entities (1)
HAS_WEAKNESS (1)
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