Medium 6.3Published Oct 28, 2026

CVE-2026-118263Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests

Updated under an hour ago (Oct 28, 2026, 10:30 PM ET)

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Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-252
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Received
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 28, 2026

Affected products

Affected products

labstack echo labstack:echo (from the name)	from 5.0.0, < 5.4.1	CNA record

References

References

https://github.com/labstack/echo/security/advisories/GHSA-x9ff-22gv-65f4	x-refsource-confirm
https://github.com/labstack/echo/pull/3105	x-refsource-misc
https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec	x-refsource-misc
https://github.com/labstack/echo/releases/tag/v5.4.1	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.