{"items":[{"id":"NVI-00009135","kind":"vulnerability","title":"opentelemetry-java: Quadratic CPU consumption in W3C tracestate parsing","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-ccrj-gw8r-854m","CVE-2026-118259"],"plain_summary":"GitHub lists this reviewed advisory for io.opentelemetry:opentelemetry-api. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-946931fe34fa295cd56a24ef81acbe8f"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-28T21:07:41.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-c38b3c5b3a1cb7e64b54eb04f2cb4d3a"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.490%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.42174. Missing scores are unknown.","source_id":"sr-946931fe34fa295cd56a24ef81acbe8f"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-c38b3c5b3a1cb7e64b54eb04f2cb4d3a","url":"https://github.com/advisories/GHSA-ccrj-gw8r-854m","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-ccrj-gw8r-854m","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:56:08.420Z"},{"id":"sr-946931fe34fa295cd56a24ef81acbe8f","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-118259","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.375Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-c38b3c5b3a1cb7e64b54eb04f2cb4d3a"],"technology":"io.opentelemetry:opentelemetry-api","known_exclusions":[],"conditions_summary":"### Summary\n\nOpenTelemetry Java's W3C trace-context propagator permits excessive CPU consumption when extracting crafted `tracestate` headers, potentially leading to denial of service. Regex backtracking causes quadratic parsing time for headers containing long runs of spaces or tabs without a following comma.\n\n### Impact\n\nAn unauthenticated attacker whose headers reach `W3CTraceContextPropagator.extract()` can cause excessive CPU usage through crafted requests. Parsing blocks the calling thread, potentially affecting other connections when extraction runs on a shared event-loop thread. Actual impact depends on ingress header-size limits, proxy configuration, and threading. Header-size limits reduce the per-request cost but do not eliminate the vulnerability.\n\n### Patches\n\nUpgrade `io.opentelemetry:opentelemetry-api` to version **1.67.0** or later. PR #8914 replaces regex delimiter splitting with literal comma scanning and explicit whitespace trimming.\n\n### Workarounds\n\nIf upgrading is not possible, reject or remove oversized `tracestate` headers before trace-context extraction. This reduces the per-request parsing c","public_affected_ranges":["<= 1.66.0"]}],"null_published_at":"2026-11-04T02:53:03.132Z","source_updated_at":"2026-10-28T21:07:41.000Z","source_disclosed_at":"2026-10-28T21:07:40.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:56:08.420Z"},{"id":"NVI-00009135","kind":"vulnerability","title":"opentelemetry-java: Quadratic CPU consumption in W3C tracestate parsing","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-ccrj-gw8r-854m","CVE-2026-118259"],"plain_summary":"GitHub lists this reviewed advisory for io.opentelemetry:opentelemetry-api. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-c38b3c5b3a1cb7e64b54eb04f2cb4d3a"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-28T21:07:41.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-c38b3c5b3a1cb7e64b54eb04f2cb4d3a"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-c38b3c5b3a1cb7e64b54eb04f2cb4d3a","url":"https://github.com/advisories/GHSA-ccrj-gw8r-854m","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-ccrj-gw8r-854m","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:56:08.420Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-c38b3c5b3a1cb7e64b54eb04f2cb4d3a"],"technology":"io.opentelemetry:opentelemetry-api","known_exclusions":[],"conditions_summary":"### Summary\n\nOpenTelemetry Java's W3C trace-context propagator permits excessive CPU consumption when extracting crafted `tracestate` headers, potentially leading to denial of service. Regex backtracking causes quadratic parsing time for headers containing long runs of spaces or tabs without a following comma.\n\n### Impact\n\nAn unauthenticated attacker whose headers reach `W3CTraceContextPropagator.extract()` can cause excessive CPU usage through crafted requests. Parsing blocks the calling thread, potentially affecting other connections when extraction runs on a shared event-loop thread. Actual impact depends on ingress header-size limits, proxy configuration, and threading. Header-size limits reduce the per-request cost but do not eliminate the vulnerability.\n\n### Patches\n\nUpgrade `io.opentelemetry:opentelemetry-api` to version **1.67.0** or later. PR #8914 replaces regex delimiter splitting with literal comma scanning and explicit whitespace trimming.\n\n### Workarounds\n\nIf upgrading is not possible, reject or remove oversized `tracestate` headers before trace-context extraction. This reduces the per-request parsing c","public_affected_ranges":["<= 1.66.0"]}],"null_published_at":"2026-10-31T22:13:31.285Z","source_updated_at":"2026-10-28T21:07:41.000Z","source_disclosed_at":"2026-10-28T21:07:40.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:56:08.420Z"}],"next_cursor":null,"snapshot_revision":"42594"}