{"items":[{"id":"NVI-00013833","kind":"vulnerability","title":"postcss-selector-parser allows denial of service through uncontrolled AST recursion","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-w9m9-85wc-3x92","CVE-2026-9358"],"plain_summary":"GitHub lists this reviewed advisory for postcss-selector-parser, postcss-selector-parser. 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-18c468dee18a595d9c19acc10b0fa2f4"],"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":"2026-09-01T15:45:57.000Z","value":"4.3 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0d1e9671906ebe8764b22fcf039cd5da"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.325%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.257. Missing scores are unknown.","source_id":"sr-18c468dee18a595d9c19acc10b0fa2f4"}],"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-0d1e9671906ebe8764b22fcf039cd5da","url":"https://github.com/advisories/GHSA-w9m9-85wc-3x92","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-w9m9-85wc-3x92","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:21:50.763Z"},{"id":"sr-18c468dee18a595d9c19acc10b0fa2f4","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-2026-9358","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.085Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0d1e9671906ebe8764b22fcf039cd5da"],"technology":"postcss-selector-parser","known_exclusions":[],"conditions_summary":"A vulnerability was determined in postcss-selector-parser before 6.1.3 and 7.1.1. Affected is the function toString of the file src/selectors/container.js of the component AST Serialization. Executing a manipulation can lead to uncontrolled recursion. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor explains, that according to his definition \"DoS on server-side on user-generated CSS is low risk for us (since most users compile own CSS with PostCSS).\"","public_affected_ranges":[">= 6.1.0, < 6.1.3"]},{"certainty":"source_listed","source_ids":["sr-0d1e9671906ebe8764b22fcf039cd5da"],"technology":"postcss-selector-parser","known_exclusions":[],"conditions_summary":"A vulnerability was determined in postcss-selector-parser before 6.1.3 and 7.1.1. Affected is the function toString of the file src/selectors/container.js of the component AST Serialization. Executing a manipulation can lead to uncontrolled recursion. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor explains, that according to his definition \"DoS on server-side on user-generated CSS is low risk for us (since most users compile own CSS with PostCSS).\"","public_affected_ranges":[">= 7.1.0, < 7.1.3"]}],"null_published_at":"2026-11-08T19:53:38.944Z","source_updated_at":"2026-09-01T15:45:57.000Z","source_disclosed_at":"2026-05-26T13:30:30.000Z","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":"2026-11-02T02:21:50.763Z"},{"id":"NVI-00013833","kind":"vulnerability","title":"postcss-selector-parser allows denial of service through uncontrolled AST recursion","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-w9m9-85wc-3x92","CVE-2026-9358"],"plain_summary":"GitHub lists this reviewed advisory for postcss-selector-parser, postcss-selector-parser. 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-0d1e9671906ebe8764b22fcf039cd5da"],"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":"2026-09-01T15:45:57.000Z","value":"4.3 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0d1e9671906ebe8764b22fcf039cd5da"}],"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-0d1e9671906ebe8764b22fcf039cd5da","url":"https://github.com/advisories/GHSA-w9m9-85wc-3x92","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-w9m9-85wc-3x92","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:21:50.763Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0d1e9671906ebe8764b22fcf039cd5da"],"technology":"postcss-selector-parser","known_exclusions":[],"conditions_summary":"A vulnerability was determined in postcss-selector-parser before 6.1.3 and 7.1.1. Affected is the function toString of the file src/selectors/container.js of the component AST Serialization. Executing a manipulation can lead to uncontrolled recursion. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor explains, that according to his definition \"DoS on server-side on user-generated CSS is low risk for us (since most users compile own CSS with PostCSS).\"","public_affected_ranges":[">= 6.1.0, < 6.1.3"]},{"certainty":"source_listed","source_ids":["sr-0d1e9671906ebe8764b22fcf039cd5da"],"technology":"postcss-selector-parser","known_exclusions":[],"conditions_summary":"A vulnerability was determined in postcss-selector-parser before 6.1.3 and 7.1.1. Affected is the function toString of the file src/selectors/container.js of the component AST Serialization. Executing a manipulation can lead to uncontrolled recursion. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor explains, that according to his definition \"DoS on server-side on user-generated CSS is low risk for us (since most users compile own CSS with PostCSS).\"","public_affected_ranges":[">= 7.1.0, < 7.1.3"]}],"null_published_at":"2026-11-02T10:00:37.157Z","source_updated_at":"2026-09-01T15:45:57.000Z","source_disclosed_at":"2026-05-26T13:30:30.000Z","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":"2026-11-02T02:21:50.763Z"}],"next_cursor":null,"snapshot_revision":"42594"}