{"cve":"CVE-2026-41178","nvd":{"published":"2026-06-04T16:16:37.297","modified":"2026-07-22T20:10:00.127","status":"Analyzed","description":"OpenTelemetry-Go is the Go implementation of OpenTelemetry. Versions 1.41.0 and 1.43.0 removed raw-length rejection and it causes `Parse` to process arbitrarily large/invalid baggage headers and log errors, enabling DoS via oversized inputs. Versions 1.42.0 and 1.44.0 fix the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-789"],"references":["https://github.com/open-telemetry/opentelemetry-go/pull/7880","https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835","https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835"],"products":["opentelemetry:opentelemetry"],"source":"nvd","synced_at":"2026-10-19T22:37:48.043517290+00:00"},"epss":{"cve":"CVE-2026-41178","score":0.00336,"percentile":0.26985,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5wrp-cwcj-q835","url":"https://osv.dev/vulnerability/GHSA-5wrp-cwcj-q835","summary":"opentelemetry-go's baggage parsing no longer caps raw header length","modified":"2026-09-10T03:51:04.741693305Z","packages":[{"ecosystem":"Go","name":"go.opentelemetry.io/otel/baggage","purl":"pkg:golang/go.opentelemetry.io/otel/baggage","ranges":[">=1.41.0 <1.42.0"],"fixed":["1.42.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/propagation","purl":"pkg:golang/go.opentelemetry.io/otel/propagation","ranges":[">=1.41.0 <1.42.0"],"fixed":["1.42.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/baggage","purl":"pkg:golang/go.opentelemetry.io/otel/baggage","ranges":[">=1.43.0 <1.44.0"],"fixed":["1.44.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/propagation","purl":"pkg:golang/go.opentelemetry.io/otel/propagation","ranges":[">=1.43.0 <1.44.0"],"fixed":["1.44.0"]}]},{"id":"GO-2026-5158","url":"https://osv.dev/vulnerability/GO-2026-5158","summary":"Opentelemetry-go's baggage parsing no longer caps raw header length in go.opentelemetry.io/otel","modified":"2026-07-27T21:59:42.805474793Z","packages":[{"ecosystem":"Go","name":"go.opentelemetry.io/otel","purl":"pkg:golang/go.opentelemetry.io/otel","ranges":[">=1.41.0 <1.42.0",">=1.43.0 <1.44.0"],"fixed":["1.42.0","1.44.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}