{"id":"CVE-2026-118263","state":"PUBLISHED","title":"Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests","description":"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.","publishedAt":"2026-10-28T19:01:30.268Z","updatedAt":"2026-10-28T19:01:30.268Z","severity":{"score":6.3,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["labstack echo"],"affected":[{"vendor":"labstack","product":"echo","versions":[{"version":">= 5.0.0, < 5.4.1","status":"affected"}]}],"references":["https://github.com/labstack/echo/security/advisories/GHSA-x9ff-22gv-65f4","https://github.com/labstack/echo/pull/3105","https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec","https://github.com/labstack/echo/releases/tag/v5.4.1"],"weaknesses":["CWE-252"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/118xxx/CVE-2026-118263.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-118263","state":"PUBLISHED","datePublished":"2026-10-28T19:01:30.268Z","dateUpdated":"2026-10-28T19:01:30.268Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-27T20:13:55.314Z"},"containers":{"cna":{"title":"Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"labstack","product":"echo","versions":[{"version":">= 5.0.0, < 5.4.1","status":"affected"}]}],"references":[{"url":"https://github.com/labstack/echo/security/advisories/GHSA-x9ff-22gv-65f4","name":"https://github.com/labstack/echo/security/advisories/GHSA-x9ff-22gv-65f4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/labstack/echo/pull/3105","name":"https://github.com/labstack/echo/pull/3105","tags":["x_refsource_MISC"]},{"url":"https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec","name":"https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec","tags":["x_refsource_MISC"]},{"url":"https://github.com/labstack/echo/releases/tag/v5.4.1","name":"https://github.com/labstack/echo/releases/tag/v5.4.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-252","lang":"en","description":"CWE-252: Unchecked Return Value","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-28T19:01:30.268Z"},"source":{"advisory":"GHSA-x9ff-22gv-65f4","discovery":"UNKNOWN"}}}}}