{"items":[{"id":"NVI-00010743","kind":"vulnerability","title":"Pillow: Infinite loop in PdfParser.rewrite_pages on page tree Parent cycle","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f2g6-542v-9j58","CVE-2026-112406"],"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-a1ea1462b7844f18a25b4be43a285c60"],"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":"0.573%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.47354. Missing scores are unknown.","source_id":"sr-a1ea1462b7844f18a25b4be43a285c60"}],"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-df6753a3d3fed65b1e9c639a2f44c2de","url":"https://github.com/advisories/GHSA-f2g6-542v-9j58","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f2g6-542v-9j58","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:30.906Z"},{"id":"sr-a1ea1462b7844f18a25b4be43a285c60","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-2026-112406","publisher":"FIRST EPSS","observed_at":"2026-10-31T23:13:27.688Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-df6753a3d3fed65b1e9c639a2f44c2de"],"technology":"Pillow","known_exclusions":[],"conditions_summary":"```\n============================================================================\nInfinite loop in PdfParser.rewrite_pages on page tree Parent cycle\nLocation: src/PIL/PdfParser.py:505  in PdfParser.rewrite_pages()\nCommit:   a707c6b21c313880d0771e54965d142dd42358b6\n============================================================================\n```\n\nA PDF file of a few hundred bytes makes Pillow hang forever, holding one processor core at 100%, when an application tries to append an image to it. Anyone who can supply the existing PDF to an application that calls `im.save(fp, \"PDF\", append=True)` (or `save_all=True, append=True`) can tie up that worker indefinitely. Memory use stays flat, so only an external timeout stops it.\n\nThe bug is in `PdfParser.rewrite_pages()` in `src/PIL/PdfParser.py` (the `while pages_tree_node_ref:` loop at line 505). For each original page, it walks the `/Parent` chain upward and stops only when it reaches a node with no `/Parent`. It keeps no record of nodes it has already visited, so a loop in that chain never ends. The simplest case is a `/Pages` root that lists itself as its own `/Parent`; a longer cycle among page-tree nodes behaves the same way. The path","public_affected_ranges":[">= 5.1.0, < 13.0.0"]}],"null_published_at":"2026-11-07T00:57:04.319Z","source_updated_at":"2026-10-21T21:21:09.000Z","source_disclosed_at":"2026-10-21T21:21:07.000Z","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":"2026-10-31T22:07:30.906Z"},{"id":"NVI-00010743","kind":"vulnerability","title":"Pillow: Infinite loop in PdfParser.rewrite_pages on page tree Parent cycle","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f2g6-542v-9j58","CVE-2026-112406"],"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-df6753a3d3fed65b1e9c639a2f44c2de"],"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-df6753a3d3fed65b1e9c639a2f44c2de","url":"https://github.com/advisories/GHSA-f2g6-542v-9j58","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f2g6-542v-9j58","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:30.906Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-df6753a3d3fed65b1e9c639a2f44c2de"],"technology":"Pillow","known_exclusions":[],"conditions_summary":"```\n============================================================================\nInfinite loop in PdfParser.rewrite_pages on page tree Parent cycle\nLocation: src/PIL/PdfParser.py:505  in PdfParser.rewrite_pages()\nCommit:   a707c6b21c313880d0771e54965d142dd42358b6\n============================================================================\n```\n\nA PDF file of a few hundred bytes makes Pillow hang forever, holding one processor core at 100%, when an application tries to append an image to it. Anyone who can supply the existing PDF to an application that calls `im.save(fp, \"PDF\", append=True)` (or `save_all=True, append=True`) can tie up that worker indefinitely. Memory use stays flat, so only an external timeout stops it.\n\nThe bug is in `PdfParser.rewrite_pages()` in `src/PIL/PdfParser.py` (the `while pages_tree_node_ref:` loop at line 505). For each original page, it walks the `/Parent` chain upward and stops only when it reaches a node with no `/Parent`. It keeps no record of nodes it has already visited, so a loop in that chain never ends. The simplest case is a `/Pages` root that lists itself as its own `/Parent`; a longer cycle among page-tree nodes behaves the same way. The path","public_affected_ranges":[">= 5.1.0, < 13.0.0"]}],"null_published_at":"2026-10-31T22:27:12.379Z","source_updated_at":"2026-10-21T21:21:09.000Z","source_disclosed_at":"2026-10-21T21:21:07.000Z","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":"2026-10-31T22:07:30.906Z"}],"next_cursor":null,"snapshot_revision":"42594"}