{"items":[{"id":"NVI-00018294","kind":"vulnerability","title":"seroval affected by Denial of Service via RegExp serialization","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-hx9m-jf43-8ffr","CVE-2026-23956"],"plain_summary":"GitHub lists this reviewed advisory for seroval. 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-0985207793abfc3ff6a39160e6042830"],"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":"2026-05-20T00:53:28.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0985207793abfc3ff6a39160e6042830"}],"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-0985207793abfc3ff6a39160e6042830","url":"https://github.com/advisories/GHSA-hx9m-jf43-8ffr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-hx9m-jf43-8ffr","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T07:02:15.138Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0985207793abfc3ff6a39160e6042830"],"technology":"seroval","known_exclusions":[],"conditions_summary":"Overriding RegExp serialization with extremely large patterns can **exhaust JavaScript runtime memory** during deserialization. Additionally, overriding RegExp serialization with patterns that trigger **catastrophic backtracking** can lead to ReDoS (Regular Expression Denial of Service).  \n\n**Mitigation**:  \n`Seroval` introduces `disabledFeatures` (a bitmask) in serialization/deserialization methods, with `Feature.RegExp` as a dedicated flag. **Users are recommended to configure `disabledFeatures` to disable RegExp serialization entirely.**","public_affected_ranges":[">= 0.2.0, <= 1.4.0"]}],"null_published_at":"2026-11-07T07:07:39.805Z","source_updated_at":"2026-05-20T00:53:28.000Z","source_disclosed_at":"2026-01-21T16:57:06.000Z","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":"2026-11-07T07:02:15.138Z"}],"next_cursor":null,"snapshot_revision":"42594"}