{"items":[{"id":"NVI-00017603","kind":"vulnerability","title":"Excelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h69g-9hx6-f3v4","CVE-2026-54063"],"plain_summary":"GitHub lists this reviewed advisory for github.com/xuri/excelize/v2. 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-04253338f1882c29851bc24c7292d9e6"],"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":"2026-07-10T19:25:21.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2b65d48d647ed2800ec77f6ab2b7b9fe"},{"kind":"EPSS","as_of":"2026-11-05T12:03:04.000Z","value":"0.607%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.49192. Missing scores are unknown.","source_id":"sr-04253338f1882c29851bc24c7292d9e6"}],"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-2b65d48d647ed2800ec77f6ab2b7b9fe","url":"https://github.com/advisories/GHSA-h69g-9hx6-f3v4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-h69g-9hx6-f3v4","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:12.429Z"},{"id":"sr-04253338f1882c29851bc24c7292d9e6","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-2026-54063","publisher":"FIRST EPSS","observed_at":"2026-11-06T07:17:46.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2b65d48d647ed2800ec77f6ab2b7b9fe"],"technology":"github.com/xuri/excelize/v2","known_exclusions":[],"conditions_summary":"## Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)\n\n### Summary\nThe `checkSheet()` function in `github.com/xuri/excelize/v2` uses an attacker-controlled `` XML attribute value directly as the length argument to `make([]xlsxRow, row)` without validating it against the Excel row limit (`TotalRows = 1,048,576`). A specially crafted XLSX file can trigger two denial-of-service variants: (A) an out-of-memory process kill when `r=2147483647` forces a ~16 GB allocation attempt, and (B) a runtime panic via out-of-bounds slice indexing when `r=-1`. Any service that opens attacker-supplied XLSX files and calls `GetCellValue` is affected. No authentication is required.\n\n### Details\nThe vulnerable code path is triggered by calling `GetCellValue` (or any API that internally invokes `workSheetReader`) on an XLSX file containing a crafted worksheet row element.\n\n**Data flow (source → sink):**\n\n1. `excelize.go:186-193` — `OpenReader` reads attacker-controlled spreadsheet bytes.\n2. `excelize.go:216-223` — ZIP reader is created and passed to `ReadZipReader`.\n3. `lib.go:43-77` — ZIP entries are read into `fileList`; worksheet XML is stored by part name.\n4. `exc","public_affected_ranges":["< 2.11.0"]}],"null_published_at":"2026-11-07T07:07:42.546Z","source_updated_at":"2026-07-10T19:25:21.000Z","source_disclosed_at":"2026-07-10T19:25:20.000Z","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":"2026-11-04T23:34:12.429Z"},{"id":"NVI-00017603","kind":"vulnerability","title":"Excelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-h69g-9hx6-f3v4","CVE-2026-54063"],"plain_summary":"GitHub lists this reviewed advisory for github.com/xuri/excelize/v2. 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-2b65d48d647ed2800ec77f6ab2b7b9fe"],"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":"2026-07-10T19:25:21.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2b65d48d647ed2800ec77f6ab2b7b9fe"}],"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-2b65d48d647ed2800ec77f6ab2b7b9fe","url":"https://github.com/advisories/GHSA-h69g-9hx6-f3v4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-h69g-9hx6-f3v4","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:12.429Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2b65d48d647ed2800ec77f6ab2b7b9fe"],"technology":"github.com/xuri/excelize/v2","known_exclusions":[],"conditions_summary":"## Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)\n\n### Summary\nThe `checkSheet()` function in `github.com/xuri/excelize/v2` uses an attacker-controlled `` XML attribute value directly as the length argument to `make([]xlsxRow, row)` without validating it against the Excel row limit (`TotalRows = 1,048,576`). A specially crafted XLSX file can trigger two denial-of-service variants: (A) an out-of-memory process kill when `r=2147483647` forces a ~16 GB allocation attempt, and (B) a runtime panic via out-of-bounds slice indexing when `r=-1`. Any service that opens attacker-supplied XLSX files and calls `GetCellValue` is affected. No authentication is required.\n\n### Details\nThe vulnerable code path is triggered by calling `GetCellValue` (or any API that internally invokes `workSheetReader`) on an XLSX file containing a crafted worksheet row element.\n\n**Data flow (source → sink):**\n\n1. `excelize.go:186-193` — `OpenReader` reads attacker-controlled spreadsheet bytes.\n2. `excelize.go:216-223` — ZIP reader is created and passed to `ReadZipReader`.\n3. `lib.go:43-77` — ZIP entries are read into `fileList`; worksheet XML is stored by part name.\n4. `exc","public_affected_ranges":["< 2.11.0"]}],"null_published_at":"2026-11-05T19:10:21.425Z","source_updated_at":"2026-07-10T19:25:21.000Z","source_disclosed_at":"2026-07-10T19:25:20.000Z","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":"2026-11-04T23:34:12.429Z"}],"next_cursor":null,"snapshot_revision":"42594"}