{"items":[{"id":"NVI-00013145","kind":"vulnerability","title":"Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-5vjj-2r48-q622","CVE-2026-61541"],"plain_summary":"GitHub lists this reviewed advisory for zapros. 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-067501304562f7d42ac5b33a562dc28c"],"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":"2026-11-01T12:00:16.000Z","value":"0.428%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.37069. Missing scores are unknown.","source_id":"sr-067501304562f7d42ac5b33a562dc28c"}],"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-736861eff0e6baa559695eb23610ac38","url":"https://github.com/advisories/GHSA-5vjj-2r48-q622","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-5vjj-2r48-q622","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:25:10.521Z"},{"id":"sr-067501304562f7d42ac5b33a562dc28c","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-2026-61541","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.284Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-736861eff0e6baa559695eb23610ac38"],"technology":"zapros","known_exclusions":[],"conditions_summary":"### Impact\n\n**Who is impacted**:\n  - Any application using Zapros to make HTTP requests to untrusted servers\n  - Applications that follow redirects to attacker-controlled hosts\n\n**Attack vector**:\n  - A malicious HTTP server returns a response with many chained content encodings. When the client attempts to decode, it creates a deeply nested decompression chain consuming excessive resources.\n\n### Patches\n\nFixed in version 0.14.0.\n\n  The fix adds a hardcoded limit of **5** `Content-Encoding` layers. Responses exceeding this limit raise `DecodingError`.\n\n### Workarounds\n\nAdd middleware that checks for a malicious Content-Encoding header.\n\n```python\nfrom typing import cast\n\nfrom zapros import (\n    AsyncBaseHandler,\n    AsyncBaseMiddleware,\n    BaseHandler,\n    BaseMiddleware,\n    Client,\n    DecodingError,\n    Request,\n    Response,\n)\n\nMAX_DECODE_LAYERS = 5\n\n\nclass ContentEncodingCheckMiddleware(BaseMiddleware, AsyncBaseMiddleware):\n    def __init__(\n        self,\n        next_handler: BaseHandler | AsyncBaseHandler,\n        *,\n        max_layers: int = MAX_DECODE_LAYERS,\n    ) -> None:\n        self.next = cast(BaseHandler, next_handler)\n        self.async_next = cast(AsyncBaseHandle","public_affected_ranges":["< 0.14.0"]}],"null_published_at":"2026-11-02T20:21:07.822Z","source_updated_at":"2026-09-23T13:58:36.000Z","source_disclosed_at":"2026-09-23T13:58:35.000Z","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":"2026-11-01T07:25:10.521Z"},{"id":"NVI-00013145","kind":"vulnerability","title":"Zapros has an Unbounded Content-Encoding decompression chain that allows denial of service","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-5vjj-2r48-q622","CVE-2026-61541"],"plain_summary":"GitHub lists this reviewed advisory for zapros. 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-736861eff0e6baa559695eb23610ac38"],"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-736861eff0e6baa559695eb23610ac38","url":"https://github.com/advisories/GHSA-5vjj-2r48-q622","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-5vjj-2r48-q622","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:25:10.521Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-736861eff0e6baa559695eb23610ac38"],"technology":"zapros","known_exclusions":[],"conditions_summary":"### Impact\n\n**Who is impacted**:\n  - Any application using Zapros to make HTTP requests to untrusted servers\n  - Applications that follow redirects to attacker-controlled hosts\n\n**Attack vector**:\n  - A malicious HTTP server returns a response with many chained content encodings. When the client attempts to decode, it creates a deeply nested decompression chain consuming excessive resources.\n\n### Patches\n\nFixed in version 0.14.0.\n\n  The fix adds a hardcoded limit of **5** `Content-Encoding` layers. Responses exceeding this limit raise `DecodingError`.\n\n### Workarounds\n\nAdd middleware that checks for a malicious Content-Encoding header.\n\n```python\nfrom typing import cast\n\nfrom zapros import (\n    AsyncBaseHandler,\n    AsyncBaseMiddleware,\n    BaseHandler,\n    BaseMiddleware,\n    Client,\n    DecodingError,\n    Request,\n    Response,\n)\n\nMAX_DECODE_LAYERS = 5\n\n\nclass ContentEncodingCheckMiddleware(BaseMiddleware, AsyncBaseMiddleware):\n    def __init__(\n        self,\n        next_handler: BaseHandler | AsyncBaseHandler,\n        *,\n        max_layers: int = MAX_DECODE_LAYERS,\n    ) -> None:\n        self.next = cast(BaseHandler, next_handler)\n        self.async_next = cast(AsyncBaseHandle","public_affected_ranges":["< 0.14.0"]}],"null_published_at":"2026-11-01T07:29:12.926Z","source_updated_at":"2026-09-23T13:58:36.000Z","source_disclosed_at":"2026-09-23T13:58:35.000Z","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":"2026-11-01T07:25:10.521Z"}],"next_cursor":null,"snapshot_revision":"42594"}