{"items":[{"id":"NVI-00011771","kind":"vulnerability","title":"borg extract might modify out-of-tree files when extracting maliciously crafted archives","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-gfp8-w835-v44j","CVE-2026-62268"],"plain_summary":"GitHub lists this reviewed advisory for borgbackup, borgbackup. 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-211ee8f172148dc2c7cd988a5913e53d"],"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-211ee8f172148dc2c7cd988a5913e53d","url":"https://github.com/advisories/GHSA-gfp8-w835-v44j","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-gfp8-w835-v44j","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:22.124Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-211ee8f172148dc2c7cd988a5913e53d"],"technology":"borgbackup","known_exclusions":[],"conditions_summary":"### Impact\n\nA maliciously crafted archive could contain a symlink (e.g. \"evil\" -> \"/etc\") followed by an item below it (\"evil/passwd\"), or an item whose path embeds \"..\" (e.g. \"a/../../etc/passwd\").\n\nWhen extracting such items, borg followed the symlink / resolved the \"..\", so it could delete or overwrite files outside the extraction directory.\n\nIn a quite similar scenario, a crafted archive could contain a slave hardlink item with the hardlink source pointing outside the extraction directory.\n\nWhen extracting such an item, borg would hard-link the outside and the inside item.\n    \nNote: that sounds bad, but it is no big issue in practice: to create such a malicious archive, the attacker would need repository access and (for encrypted or authenticated repos) also the borg key and passphrase.\n\nAffected: likely all borg releases before 1.4.5 (and also all borg 2.0.0 betas before b22).\n\n### Patches\n- 1.4.x release series: fix released with 1.4.5. commits 3e9ed6d1ad6d3531b39c07b8ef3ecf41fce4437f and 141888f2fabcd57a300547c2aa63212cb213924d.\n- 1.2.x release series: no new releases any more, fix commits available on 1.2-maint branch: 0ac568e290518c3bbe781459978720dde7fab224 and d907f2cb5","public_affected_ranges":["< 1.4.5"]},{"certainty":"source_listed","source_ids":["sr-211ee8f172148dc2c7cd988a5913e53d"],"technology":"borgbackup","known_exclusions":[],"conditions_summary":"### Impact\n\nA maliciously crafted archive could contain a symlink (e.g. \"evil\" -> \"/etc\") followed by an item below it (\"evil/passwd\"), or an item whose path embeds \"..\" (e.g. \"a/../../etc/passwd\").\n\nWhen extracting such items, borg followed the symlink / resolved the \"..\", so it could delete or overwrite files outside the extraction directory.\n\nIn a quite similar scenario, a crafted archive could contain a slave hardlink item with the hardlink source pointing outside the extraction directory.\n\nWhen extracting such an item, borg would hard-link the outside and the inside item.\n    \nNote: that sounds bad, but it is no big issue in practice: to create such a malicious archive, the attacker would need repository access and (for encrypted or authenticated repos) also the borg key and passphrase.\n\nAffected: likely all borg releases before 1.4.5 (and also all borg 2.0.0 betas before b22).\n\n### Patches\n- 1.4.x release series: fix released with 1.4.5. commits 3e9ed6d1ad6d3531b39c07b8ef3ecf41fce4437f and 141888f2fabcd57a300547c2aa63212cb213924d.\n- 1.2.x release series: no new releases any more, fix commits available on 1.2-maint branch: 0ac568e290518c3bbe781459978720dde7fab224 and d907f2cb5","public_affected_ranges":[">= 2.0.0b1, < 2.0.0b22"]}],"null_published_at":"2026-11-01T01:03:56.602Z","source_updated_at":"2026-10-15T20:09:24.000Z","source_disclosed_at":"2026-10-15T20:09:23.000Z","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":"2026-10-31T23:14:22.124Z"}],"next_cursor":null,"snapshot_revision":"42594"}