{"items":[{"id":"NVI-00016181","kind":"vulnerability","title":"ExifReader HEIC/AVIF ISO-BMFF parser throws uncaught RangeError on truncated boxes","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g77h-45rf-hcx4","CVE-2026-53496"],"plain_summary":"GitHub lists this reviewed advisory for exifreader. 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-1b4cf48856feabe23c84c2acead2d484"],"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":"2026-07-17T20:19:40.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3d8e103a6e04f4dec5afebe1343656b9"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.507%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.43378. Missing scores are unknown.","source_id":"sr-1b4cf48856feabe23c84c2acead2d484"}],"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-3d8e103a6e04f4dec5afebe1343656b9","url":"https://github.com/advisories/GHSA-g77h-45rf-hcx4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g77h-45rf-hcx4","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T02:49:06.528Z"},{"id":"sr-1b4cf48856feabe23c84c2acead2d484","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-2026-53496","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:58:50.331Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3d8e103a6e04f4dec5afebe1343656b9"],"technology":"exifreader","known_exclusions":[],"conditions_summary":"## Summary\n\nExifReader 4.40.0 can throw an uncaught `RangeError: Offset is outside the bounds of the DataView` while parsing crafted HEIC/AVIF files. The file only needs a valid leading `ftyp` box with a HEIC/AVIF major brand followed by a malformed ISO-BMFF box, such as an empty 8-byte `free` box or a truncated extended-size box.\n\nThis is reachable through the public `ExifReader.load()` API for in-memory buffers and through the async file/URL loaders when an application parses attacker-supplied images. In applications that do not wrap every parse in a defensive try/catch, a single uploaded or fetched image can abort the request/worker and cause a denial of service.\n\nCredit requested: Yaohui Wang.\n\n## Affected version tested\n\n- npm package: `exifreader`\n- Version: `4.40.0`\n- Repository commit tested: `8cb0261a26b7d986955fe0a6780f076dcb7902e7`\n\n## Root cause\n\nThe ISO-BMFF parser assumes that every top-level box with at least an 8-byte header also has enough bytes for the fields required by its parsed form. In `src/image-header-iso-bmff.js`:\n\n- `findMetaBox()` calls `parseBox(dataView, offset)` while only checking that `offset + 8 <= dataView.byteLength`.\n- `parseBox()` calls `getBox","public_affected_ranges":["<= 4.40.0"]}],"null_published_at":"2026-11-08T19:53:44.009Z","source_updated_at":"2026-07-17T20:19:40.000Z","source_disclosed_at":"2026-07-17T20:19:39.000Z","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":"2026-11-04T02:49:06.528Z"},{"id":"NVI-00016181","kind":"vulnerability","title":"ExifReader HEIC/AVIF ISO-BMFF parser throws uncaught RangeError on truncated boxes","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g77h-45rf-hcx4","CVE-2026-53496"],"plain_summary":"GitHub lists this reviewed advisory for exifreader. 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-3d8e103a6e04f4dec5afebe1343656b9"],"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":"2026-07-17T20:19:40.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3d8e103a6e04f4dec5afebe1343656b9"}],"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-3d8e103a6e04f4dec5afebe1343656b9","url":"https://github.com/advisories/GHSA-g77h-45rf-hcx4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g77h-45rf-hcx4","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T02:49:06.528Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3d8e103a6e04f4dec5afebe1343656b9"],"technology":"exifreader","known_exclusions":[],"conditions_summary":"## Summary\n\nExifReader 4.40.0 can throw an uncaught `RangeError: Offset is outside the bounds of the DataView` while parsing crafted HEIC/AVIF files. The file only needs a valid leading `ftyp` box with a HEIC/AVIF major brand followed by a malformed ISO-BMFF box, such as an empty 8-byte `free` box or a truncated extended-size box.\n\nThis is reachable through the public `ExifReader.load()` API for in-memory buffers and through the async file/URL loaders when an application parses attacker-supplied images. In applications that do not wrap every parse in a defensive try/catch, a single uploaded or fetched image can abort the request/worker and cause a denial of service.\n\nCredit requested: Yaohui Wang.\n\n## Affected version tested\n\n- npm package: `exifreader`\n- Version: `4.40.0`\n- Repository commit tested: `8cb0261a26b7d986955fe0a6780f076dcb7902e7`\n\n## Root cause\n\nThe ISO-BMFF parser assumes that every top-level box with at least an 8-byte header also has enough bytes for the fields required by its parsed form. In `src/image-header-iso-bmff.js`:\n\n- `findMetaBox()` calls `parseBox(dataView, offset)` while only checking that `offset + 8 <= dataView.byteLength`.\n- `parseBox()` calls `getBox","public_affected_ranges":["<= 4.40.0"]}],"null_published_at":"2026-11-04T10:04:27.902Z","source_updated_at":"2026-07-17T20:19:40.000Z","source_disclosed_at":"2026-07-17T20:19:39.000Z","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":"2026-11-04T02:49:06.528Z"}],"next_cursor":null,"snapshot_revision":"42594"}