CVE-2026-118263 (GCVE-0-2026-118263)

Vulnerability from cvelistv5 – Published: 2026-10-28 19:01 – Updated: 2026-10-28 19:01
VLAI
Title
Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests
Summary
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.
Severity
6.3 (Medium)
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
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8129 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
labstack echo Affected: >= 5.0.0, < 5.4.1
guessed Create a notification for this product.
Show details on NVD website
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          "value": "Echo is a Go web framework. From 5.0.0 until 5.4.1, Echo v5\u0027s BodyDump middleware can discard a BodyLimit overflow error for an unknown-length request when BodyDump\u0027s 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."
        }
      ],
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            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
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            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW"
          }
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      ],
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          "descriptions": [
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              "description": "CWE-252: Unchecked Return Value",
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            }
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T19:01:30.268Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/labstack/echo/security/advisories/GHSA-x9ff-22gv-65f4",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/labstack/echo/security/advisories/GHSA-x9ff-22gv-65f4"
        },
        {
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          "tags": [
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          "url": "https://github.com/labstack/echo/pull/3105"
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          "tags": [
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          "url": "https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec"
        },
        {
          "name": "https://github.com/labstack/echo/releases/tag/v5.4.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/labstack/echo/releases/tag/v5.4.1"
        }
      ],
      "source": {
        "advisory": "GHSA-x9ff-22gv-65f4",
        "discovery": "UNKNOWN"
      },
      "title": "Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-118263",
    "datePublished": "2026-10-28T19:01:30.268Z",
    "dateReserved": "2026-10-27T20:13:55.314Z",
    "dateUpdated": "2026-10-28T19:01:30.268Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
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      "date": "2026-10-30",
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    },
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                "vendor": "labstack",
                "versions": [
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                    "status": "affected",
                    "version": "\u003e= 5.0.0, \u003c 5.4.1"
                  }
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        "descriptions": [
          {
            "lang": "en",
            "value": "Echo is a Go web framework. From 5.0.0 until 5.4.1, Echo v5\u0027s BodyDump middleware can discard a BodyLimit overflow error for an unknown-length request when BodyDump\u0027s 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."
          }
        ],
        "id": "CVE-2026-118263",
        "lastModified": "2026-10-29T15:15:16.507",
        "metrics": {
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                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
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                "subIntegrityImpact": "NONE",
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                "valueDensity": "NOT_DEFINED",
                "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
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                "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "published": "2026-10-28T19:17:31.097",
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        ]
      }
    }
  }
}



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