CVE-2026-118263

Source
https://cve.org/CVERecord?id=CVE-2026-118263
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-118263.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-118263
Aliases
Published
2026-10-28T19:01:30Z
Modified
2026-10-29T10:45:55Z
Severity
  • 6.3 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests
Details

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.

Database specific
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-252"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118263.json"
}
References

Affected packages

Git / github.com/labstack/echo

Affected ranges

Type
GIT
Repo
https://github.com/labstack/echo
Events
Database specific
Show details
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "5.0.0"
                },
                {
                    "fixed":  "5.4.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "1855061e572ae9dab727c811d8382f266bfbaaec"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v5.4.1",
            "range":  [
                {
                    "fixed":  "a6a9673a54d2c719ceb32ce6a929d35483acfb2b"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v5.1.0
v5.1.1
v5.2.0
v5.2.1
v5.3.0
v5.3.1
v5.4.0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-118263.json"