{"items":[{"id":"NVI-00011992","kind":"vulnerability","title":"Pillow: TIFF encoder ColorMap plane-size mismatch causes a heap out-of-bounds read","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-pchr-8j38-3x4p","CVE-2026-112896"],"plain_summary":"GitHub lists this reviewed advisory for Pillow. 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-1da6442c90cffaaeda15dc87204367f0"],"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":"2026-11-03T12:00:27.000Z","value":"0.475%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.41079. Missing scores are unknown.","source_id":"sr-1da6442c90cffaaeda15dc87204367f0"}],"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-7d04112472508ecc3338ef07814b68b4","url":"https://github.com/advisories/GHSA-pchr-8j38-3x4p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-pchr-8j38-3x4p","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"},{"id":"sr-1da6442c90cffaaeda15dc87204367f0","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-2026-112896","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.775Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7d04112472508ecc3338ef07814b68b4"],"technology":"Pillow","known_exclusions":[],"conditions_summary":"## Summary\n\nA small attacker-supplied TIFF can be opened and loaded normally, then reach an out-of-bounds read when an application saves it back to TIFF with retained metadata. The fixed reproducer is a 1×1, 16-bit grayscale, PackBits-compressed TIFF containing tag 320 (ColorMap) with **768 SHORT values**: three zero-filled planes of 256 entries each. No Python object is forged and no metadata is injected after loading.\n\nPillow's TIFF encoder allocates **768 × 2 = 1536 bytes**, then passes three plane pointers separated by 256 SHORT entries to libtiff. With `BitsPerSample = 16`, libtiff instead expects **65536 SHORT values per plane** and attempts a **131072-byte read** from a plane pointer. Existing ASAN observations identify a heap-buffer-overflow READ crossing the 1536-byte allocation made in `PyImaging_LibTiffEncoderNew`.\n\nThe malformed ColorMap need not be a valid palette for this grayscale image. The issue is that accepted metadata is forwarded on save without reconciling the fixed plane extent with the effective sample depth. Opening/loading alone is not the demonstrated fault; the encoder path is required.\n\n## Impact and prerequisites\n\nAn application must accept the input, ","public_affected_ranges":["<= 12.3.0"]}],"null_published_at":"2026-11-07T14:01:55.406Z","source_updated_at":"2026-10-20T20:51:40.000Z","source_disclosed_at":"2026-10-20T20:51:40.000Z","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":"2026-10-31T23:13:39.183Z"},{"id":"NVI-00011992","kind":"vulnerability","title":"Pillow: TIFF encoder ColorMap plane-size mismatch causes a heap out-of-bounds read","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-pchr-8j38-3x4p","CVE-2026-112896"],"plain_summary":"GitHub lists this reviewed advisory for Pillow. 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-255a3b07b83ff09c1c2df7244fa157aa"],"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":"0.475%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.41056. Missing scores are unknown.","source_id":"sr-255a3b07b83ff09c1c2df7244fa157aa"}],"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-7d04112472508ecc3338ef07814b68b4","url":"https://github.com/advisories/GHSA-pchr-8j38-3x4p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-pchr-8j38-3x4p","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"},{"id":"sr-255a3b07b83ff09c1c2df7244fa157aa","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-2026-112896","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.066Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7d04112472508ecc3338ef07814b68b4"],"technology":"Pillow","known_exclusions":[],"conditions_summary":"## Summary\n\nA small attacker-supplied TIFF can be opened and loaded normally, then reach an out-of-bounds read when an application saves it back to TIFF with retained metadata. The fixed reproducer is a 1×1, 16-bit grayscale, PackBits-compressed TIFF containing tag 320 (ColorMap) with **768 SHORT values**: three zero-filled planes of 256 entries each. No Python object is forged and no metadata is injected after loading.\n\nPillow's TIFF encoder allocates **768 × 2 = 1536 bytes**, then passes three plane pointers separated by 256 SHORT entries to libtiff. With `BitsPerSample = 16`, libtiff instead expects **65536 SHORT values per plane** and attempts a **131072-byte read** from a plane pointer. Existing ASAN observations identify a heap-buffer-overflow READ crossing the 1536-byte allocation made in `PyImaging_LibTiffEncoderNew`.\n\nThe malformed ColorMap need not be a valid palette for this grayscale image. The issue is that accepted metadata is forwarded on save without reconciling the fixed plane extent with the effective sample depth. Opening/loading alone is not the demonstrated fault; the encoder path is required.\n\n## Impact and prerequisites\n\nAn application must accept the input, ","public_affected_ranges":["<= 12.3.0"]}],"null_published_at":"2026-11-01T14:34:14.104Z","source_updated_at":"2026-10-20T20:51:40.000Z","source_disclosed_at":"2026-10-20T20:51:40.000Z","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":"2026-10-31T23:13:39.183Z"},{"id":"NVI-00011992","kind":"vulnerability","title":"Pillow: TIFF encoder ColorMap plane-size mismatch causes a heap out-of-bounds read","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-pchr-8j38-3x4p","CVE-2026-112896"],"plain_summary":"GitHub lists this reviewed advisory for Pillow. 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-7d04112472508ecc3338ef07814b68b4"],"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-7d04112472508ecc3338ef07814b68b4","url":"https://github.com/advisories/GHSA-pchr-8j38-3x4p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-pchr-8j38-3x4p","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7d04112472508ecc3338ef07814b68b4"],"technology":"Pillow","known_exclusions":[],"conditions_summary":"## Summary\n\nA small attacker-supplied TIFF can be opened and loaded normally, then reach an out-of-bounds read when an application saves it back to TIFF with retained metadata. The fixed reproducer is a 1×1, 16-bit grayscale, PackBits-compressed TIFF containing tag 320 (ColorMap) with **768 SHORT values**: three zero-filled planes of 256 entries each. No Python object is forged and no metadata is injected after loading.\n\nPillow's TIFF encoder allocates **768 × 2 = 1536 bytes**, then passes three plane pointers separated by 256 SHORT entries to libtiff. With `BitsPerSample = 16`, libtiff instead expects **65536 SHORT values per plane** and attempts a **131072-byte read** from a plane pointer. Existing ASAN observations identify a heap-buffer-overflow READ crossing the 1536-byte allocation made in `PyImaging_LibTiffEncoderNew`.\n\nThe malformed ColorMap need not be a valid palette for this grayscale image. The issue is that accepted metadata is forwarded on save without reconciling the fixed plane extent with the effective sample depth. Opening/loading alone is not the demonstrated fault; the encoder path is required.\n\n## Impact and prerequisites\n\nAn application must accept the input, ","public_affected_ranges":["<= 12.3.0"]}],"null_published_at":"2026-11-01T01:03:56.620Z","source_updated_at":"2026-10-20T20:51:40.000Z","source_disclosed_at":"2026-10-20T20:51:40.000Z","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":"2026-10-31T23:13:39.183Z"}],"next_cursor":null,"snapshot_revision":"42594"}