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CVE-2026-41178

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f897f1dfb172eef7bf174c57ba80d99d7733c0149c576b71a6c754ada07442bc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"go.opentelemetry.io/otel/baggage","vendor":"open-telemetry","versions":[{"status":"affected","version":"= 1.41.0"},{"status":"affected","version":"= 1.43.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/cna/affected/0

{"product":"go.opentelemetry.io/otel/propagation","vendor":"open-telemetry","versions":[{"status":"affected","version":"= 1.41.0"},{"status":"affected","version":"= 1.43.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"product":"go.opentelemetry.io/otel/baggage","vendor":"open-telemetry","versions":[{"status":"affected","version":"= 1.41.0"},{"status":"affected","version":"= 1.43.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/cna/affected/0
{"product":"go.opentelemetry.io/otel/propagation","vendor":"open-telemetry","versions":[{"status":"affected","version":"= 1.41.0"},{"status":"affected","version":"= 1.43.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-789","description":"CWE-789: Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/open-telemetry/opentelemetry-go/pull/7880","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-go/pull/7880"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/adp/0/references/0
{"name":"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b65e0ee04ec67a8a3147b4faa7ac39e58abea86be082a4bf8dd2fd069e647f5 · sha256:48705458de1e4ad2… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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