{"items":[{"id":"NVI-00008966","kind":"vulnerability","title":"pageant: unbounded frame buffering on peer-controlled 4-byte length prefix (memory-exhaustion DoS)","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-662x-8wvj-2276","CVE-2026-116775"],"plain_summary":"GitHub lists this reviewed advisory for pageant. 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-20f46820642a57040b0e41fa9355422b"],"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":"2026-11-03T13:17:20.337Z","value":"2.3 LOW (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-671c54ab46c5a3ad782910c525c30b2e"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.294%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.22023. Missing scores are unknown.","source_id":"sr-20f46820642a57040b0e41fa9355422b"}],"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-4ea6b1b48d1b774b07187d390736d21d","url":"https://github.com/advisories/GHSA-662x-8wvj-2276","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-662x-8wvj-2276","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"},{"id":"sr-671c54ab46c5a3ad782910c525c30b2e","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116775","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-116775","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-07T00:53:03.072Z"},{"id":"sr-20f46820642a57040b0e41fa9355422b","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-2026-116775","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.374Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4ea6b1b48d1b774b07187d390736d21d"],"technology":"pageant","known_exclusions":[],"conditions_summary":"## Summary\n\n`pageant::PageantStream` reads a 4-byte big-endian length prefix from its input stream and buffers until `len + 4` bytes are available, without ever validating `len`. The underlying WM_COPYDATA transport physically cannot carry frames larger than 8 KiB (`_AGENT_MAX_MSGLEN`, the fixed-size shared memory mapping), so an oversized frame is destined to fail — but only after the re-framing task has already buffered the full claimed size. A peer controlling the stream bytes can claim a frame of up to ~4 GiB and either stream that much data (forcing a corresponding allocation) or simply stop mid-frame and keep the partial buffer resident indefinitely.\n\n## Vulnerable code\n\n`pageant/src/wmmessage.rs`, `PageantStream::new()` (the spawned re-framing task), current main:\n\n```rust\nlet mut buf = BytesMut::new();\nwhile let Ok(n) = two.read_buf(&mut buf).await {\n    if n == 0 { break; }\n    if buf.len() < 4 { continue; }\n    let len = BigEndian::read_u32(&buf) as usize;\n    if buf.len() < len + 4 { continue; }   // <-- `len` is trusted; no upper bound\n    let msg = buf.split_to(len + 4).freeze();\n    // ...\n}\n```\n\n`len` is consumed verbatim from the stream, so `buf` grows towards `len ","public_affected_ranges":[">= 0.2.0, <= 0.2.4"]}],"null_published_at":"2026-11-07T18:43:12.116Z","source_updated_at":"2026-10-30T22:59:03.000Z","source_disclosed_at":"2026-10-30T22:59:00.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:55:49.621Z"},{"id":"NVI-00008966","kind":"vulnerability","title":"pageant: unbounded frame buffering on peer-controlled 4-byte length prefix (memory-exhaustion DoS)","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-662x-8wvj-2276","CVE-2026-116775"],"plain_summary":"GitHub lists this reviewed advisory for pageant. 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-20f46820642a57040b0e41fa9355422b"],"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":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.294%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.22023. Missing scores are unknown.","source_id":"sr-20f46820642a57040b0e41fa9355422b"}],"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-4ea6b1b48d1b774b07187d390736d21d","url":"https://github.com/advisories/GHSA-662x-8wvj-2276","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-662x-8wvj-2276","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"},{"id":"sr-20f46820642a57040b0e41fa9355422b","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-2026-116775","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.374Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4ea6b1b48d1b774b07187d390736d21d"],"technology":"pageant","known_exclusions":[],"conditions_summary":"## Summary\n\n`pageant::PageantStream` reads a 4-byte big-endian length prefix from its input stream and buffers until `len + 4` bytes are available, without ever validating `len`. The underlying WM_COPYDATA transport physically cannot carry frames larger than 8 KiB (`_AGENT_MAX_MSGLEN`, the fixed-size shared memory mapping), so an oversized frame is destined to fail — but only after the re-framing task has already buffered the full claimed size. A peer controlling the stream bytes can claim a frame of up to ~4 GiB and either stream that much data (forcing a corresponding allocation) or simply stop mid-frame and keep the partial buffer resident indefinitely.\n\n## Vulnerable code\n\n`pageant/src/wmmessage.rs`, `PageantStream::new()` (the spawned re-framing task), current main:\n\n```rust\nlet mut buf = BytesMut::new();\nwhile let Ok(n) = two.read_buf(&mut buf).await {\n    if n == 0 { break; }\n    if buf.len() < 4 { continue; }\n    let len = BigEndian::read_u32(&buf) as usize;\n    if buf.len() < len + 4 { continue; }   // <-- `len` is trusted; no upper bound\n    let msg = buf.split_to(len + 4).freeze();\n    // ...\n}\n```\n\n`len` is consumed verbatim from the stream, so `buf` grows towards `len ","public_affected_ranges":[">= 0.2.0, <= 0.2.4"]}],"null_published_at":"2026-10-31T22:27:09.609Z","source_updated_at":"2026-10-30T22:59:03.000Z","source_disclosed_at":"2026-10-30T22:59:00.000Z","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":"2026-10-31T21:55:49.621Z"},{"id":"NVI-00008966","kind":"vulnerability","title":"pageant: unbounded frame buffering on peer-controlled 4-byte length prefix (memory-exhaustion DoS)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-662x-8wvj-2276","CVE-2026-116775"],"plain_summary":"GitHub lists this reviewed advisory for pageant. 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-4ea6b1b48d1b774b07187d390736d21d"],"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-4ea6b1b48d1b774b07187d390736d21d","url":"https://github.com/advisories/GHSA-662x-8wvj-2276","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-662x-8wvj-2276","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4ea6b1b48d1b774b07187d390736d21d"],"technology":"pageant","known_exclusions":[],"conditions_summary":"## Summary\n\n`pageant::PageantStream` reads a 4-byte big-endian length prefix from its input stream and buffers until `len + 4` bytes are available, without ever validating `len`. The underlying WM_COPYDATA transport physically cannot carry frames larger than 8 KiB (`_AGENT_MAX_MSGLEN`, the fixed-size shared memory mapping), so an oversized frame is destined to fail — but only after the re-framing task has already buffered the full claimed size. A peer controlling the stream bytes can claim a frame of up to ~4 GiB and either stream that much data (forcing a corresponding allocation) or simply stop mid-frame and keep the partial buffer resident indefinitely.\n\n## Vulnerable code\n\n`pageant/src/wmmessage.rs`, `PageantStream::new()` (the spawned re-framing task), current main:\n\n```rust\nlet mut buf = BytesMut::new();\nwhile let Ok(n) = two.read_buf(&mut buf).await {\n    if n == 0 { break; }\n    if buf.len() < 4 { continue; }\n    let len = BigEndian::read_u32(&buf) as usize;\n    if buf.len() < len + 4 { continue; }   // <-- `len` is trusted; no upper bound\n    let msg = buf.split_to(len + 4).freeze();\n    // ...\n}\n```\n\n`len` is consumed verbatim from the stream, so `buf` grows towards `len ","public_affected_ranges":[">= 0.2.0, <= 0.2.4"]}],"null_published_at":"2026-10-31T22:13:27.124Z","source_updated_at":"2026-10-30T22:59:03.000Z","source_disclosed_at":"2026-10-30T22:59:00.000Z","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":"2026-10-31T21:55:49.621Z"}],"next_cursor":null,"snapshot_revision":"42594"}