{"items":[{"id":"NVI-00013254","kind":"vulnerability","title":"OpenTelemetry-Go: UTF-8 replacement rune bypasses attribute length truncation","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-p9f8-wvj8-2fg8","CVE-2026-81869"],"plain_summary":"GitHub lists this reviewed advisory for go.opentelemetry.io/otel/sdk. 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-0ba97313c6340a4913f8be43a7852cc9"],"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":"2026-09-30T17:43:24.057Z","value":"5.1 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-7e9aad894714d3aa3b00ea25765e62ae"},{"kind":"EPSS","as_of":"2026-11-05T12:03:04.000Z","value":"0.180%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.07631. Missing scores are unknown.","source_id":"sr-0ba97313c6340a4913f8be43a7852cc9"}],"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-a768dde21cf0a2088dd8e6b34f8fbc13","url":"https://github.com/advisories/GHSA-p9f8-wvj8-2fg8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-p9f8-wvj8-2fg8","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:24:25.558Z"},{"id":"sr-7e9aad894714d3aa3b00ea25765e62ae","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81869","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-81869","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:59:13.348Z"},{"id":"sr-0ba97313c6340a4913f8be43a7852cc9","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-2026-81869","publisher":"FIRST EPSS","observed_at":"2026-11-06T07:17:46.399Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a768dde21cf0a2088dd8e6b34f8fbc13"],"technology":"go.opentelemetry.io/otel/sdk","known_exclusions":[],"conditions_summary":"### Summary\n\nThe OpenTelemetry Go SDK trace package can fail to enforce `AttributeValueLengthLimit` for string attributes containing the valid Unicode replacement character U+FFFD. An oversized attacker-controlled attribute value that includes U+FFFD is returned untruncated, bypassing the configured memory/DoS protection and allowing increased per-span memory usage. The finding is low severity because it requires a deployment with attribute value length limits enabled and attacker-controlled data being recorded into span attributes.\n\nIntroduced in commit 49a6536\n\n### Details\n\nString and string-slice span attributes are truncated through `safeTruncate` when `AttributeValueLengthLimit` is non-negative. The finding evidence identifies this enforcement path in `sdk/trace/span.go:303-331`, with string attributes passed to `safeTruncate` at `sdk/trace/span.go:309-310` and string-slice entries passed to `safeTruncate` in the loop beginning at `sdk/trace/span.go:312`.\n\n`safeTruncate` first calls `safeTruncateValidUTF8`; if that returns `ok=false`, it calls `strings.ToValidUTF8(input, \"\")` and retries. The relevant code is identified in `sdk/trace/span.go:337-355`. `safeTruncateValidUTF8` t","public_affected_ranges":[">= 1.10.0, < 1.33.0"]}],"null_published_at":"2026-11-08T15:11:49.423Z","source_updated_at":"2026-09-29T17:59:11.000Z","source_disclosed_at":"2026-09-29T17:59:10.000Z","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":"2026-11-01T07:24:25.558Z"},{"id":"NVI-00013254","kind":"vulnerability","title":"OpenTelemetry-Go: UTF-8 replacement rune bypasses attribute length truncation","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-p9f8-wvj8-2fg8","CVE-2026-81869"],"plain_summary":"GitHub lists this reviewed advisory for go.opentelemetry.io/otel/sdk. 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-a768dde21cf0a2088dd8e6b34f8fbc13"],"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":[],"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-a768dde21cf0a2088dd8e6b34f8fbc13","url":"https://github.com/advisories/GHSA-p9f8-wvj8-2fg8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-p9f8-wvj8-2fg8","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:24:25.558Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a768dde21cf0a2088dd8e6b34f8fbc13"],"technology":"go.opentelemetry.io/otel/sdk","known_exclusions":[],"conditions_summary":"### Summary\n\nThe OpenTelemetry Go SDK trace package can fail to enforce `AttributeValueLengthLimit` for string attributes containing the valid Unicode replacement character U+FFFD. An oversized attacker-controlled attribute value that includes U+FFFD is returned untruncated, bypassing the configured memory/DoS protection and allowing increased per-span memory usage. The finding is low severity because it requires a deployment with attribute value length limits enabled and attacker-controlled data being recorded into span attributes.\n\nIntroduced in commit 49a6536\n\n### Details\n\nString and string-slice span attributes are truncated through `safeTruncate` when `AttributeValueLengthLimit` is non-negative. The finding evidence identifies this enforcement path in `sdk/trace/span.go:303-331`, with string attributes passed to `safeTruncate` at `sdk/trace/span.go:309-310` and string-slice entries passed to `safeTruncate` in the loop beginning at `sdk/trace/span.go:312`.\n\n`safeTruncate` first calls `safeTruncateValidUTF8`; if that returns `ok=false`, it calls `strings.ToValidUTF8(input, \"\")` and retries. The relevant code is identified in `sdk/trace/span.go:337-355`. `safeTruncateValidUTF8` t","public_affected_ranges":[">= 1.10.0, < 1.33.0"]}],"null_published_at":"2026-11-01T07:29:12.932Z","source_updated_at":"2026-09-29T17:59:11.000Z","source_disclosed_at":"2026-09-29T17:59:10.000Z","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":"2026-11-01T07:24:25.558Z"}],"next_cursor":null,"snapshot_revision":"42594"}