CVE Explorer

CVE-2026-23886

Swift W3C TraceContext is a Swift implementation of the W3C Trace Context standard, and Swift OTel is an OpenTelemetry Protocol (OTLP) backend for Swift Log, Swift Metrics, and Swift Distributed Tracing. Prior to Swift W3C TraceContext version 1.0.0-beta.5 and Swift OTel version 1.0.4, a denial-of-service vulnerability due to improper input validation allows a remote attacker to crash the service via a malformed HTTP header. This allows crashing the process with data coming from the network when

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d0e55238c607d5065c1054fa3d6d91d3229bdd785f6fc817e0262bf73e131e65

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"swift-w3c-trace-context","vendor":"swift-otel","versions":[{"status":"affected","version":"swift-otel < 1.0.4"},{"status":"affected","version":"swift-w3c-trace-context < 1.0.0-beta.5"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:8bfb21358c0cbb12d5be50136a1021bd51af5010258d139fcbf956bdb8b75759 · sha256:9d4f4d3dc0f2e413… · /containers/cna/affected/0

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:v2:8bfb21358c0cbb12d5be50136a1021bd51af5010258d139fcbf956bdb8b75759 · sha256:9d4f4d3dc0f2e413… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:8bfb21358c0cbb12d5be50136a1021bd51af5010258d139fcbf956bdb8b75759 · sha256:9d4f4d3dc0f2e413… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions

{"name":"https://github.com/swift-otel/swift-otel/releases/tag/1.0.4","tags":["x_refsource_MISC"],"url":"https://github.com/swift-otel/swift-otel/releases/tag/1.0.4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8bfb21358c0cbb12d5be50136a1021bd51af5010258d139fcbf956bdb8b75759 · sha256:9d4f4d3dc0f2e413… · /containers/cna/references/2

{"name":"https://github.com/swift-otel/swift-w3c-trace-context/commit/5da9b143ba6046734de3fa51dafea28290174e4e","tags":["x_refsource_MISC"],"url":"https://github.com/swift-otel/swift-w3c-trace-context/commit/5da9b143ba6046734de3fa51dafea28290174e4e"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8bfb21358c0cbb12d5be50136a1021bd51af5010258d139fcbf956bdb8b75759 · sha256:9d4f4d3dc0f2e413… · /containers/cna/references/1

{"name":"https://github.com/swift-otel/swift-w3c-trace-context/releases/tag/1.0.0-beta.5","tags":["x_refsource_MISC"],"url":"https://github.com/swift-otel/swift-w3c-trace-context/releases/tag/1.0.0-beta.5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8bfb21358c0cbb12d5be50136a1021bd51af5010258d139fcbf956bdb8b75759 · sha256:9d4f4d3dc0f2e413… · /containers/cna/references/3

{"name":"https://github.com/swift-otel/swift-w3c-trace-context/security/advisories/GHSA-mvpq-2v8x-ww6g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/swift-otel/swift-w3c-trace-context/security/advisories/GHSA-mvpq-2v8x-ww6g"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8bfb21358c0cbb12d5be50136a1021bd51af5010258d139fcbf956bdb8b75759 · sha256:9d4f4d3dc0f2e413… · /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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