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CVE-2026-118263

Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests

CVSS 4.0 6.3 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 28 Oct 2026 19:46:48 UTC. Read the latest advisory.

cve-program · CVE-2026-118263

Published

Echo is a Go web framework. From 5.0.0 until 5.4.1, Echo v5's BodyDump middleware can discard a BodyLimit overflow error for an unknown-length request when BodyDump's capture limit is below the BodyLimit threshold. BodyDump drains the remaining body while ignoring read errors and replaces it with the captured prefix, so an HTTP/1.1 chunked request can be truncated and processed successfully even though the original body exceeded the configured limit. Known-length requests rejected before BodyDump runs are unaffected, and the issue does not establish a general authentication bypass or denial of service. This issue is fixed in 5.4.1.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-118263

Published

Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests

Echo is a Go web framework. From 5.0.0 until 5.4.1, Echo v5's BodyDump middleware can discard a BodyLimit overflow error for an unknown-length request when BodyDump's capture limit is below the BodyLimit threshold. BodyDump drains the remaining body while ignoring read errors and replaces it with the captured prefix, so an HTTP/1.1 chunked request can be truncated and processed successfully even though the original body exceeded the configured limit. Known-length requests rejected before BodyDump runs are unaffected, and the issue does not establish a general authentication bypass or denial of service. This issue is fixed in 5.4.1.

Source published
28 Oct 2026 19:01:30 UTC
Source modified
28 Oct 2026 19:01:30 UTC
Saved here
28 Oct 2026 19:46:48 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

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