{"items":[{"id":"NVI-00015078","kind":"vulnerability","title":"aiosend: Deserialization of request body before signature verification (Pre-auth DoS) in webhook handler","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7m8f-hgjq-8gc9","CVE-2026-70646"],"plain_summary":"GitHub lists this reviewed advisory for aiosend. 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-0afc3ed5f8f70fcd69070418be2cb3a5"],"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":"2026-08-06T14:38:22.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1984c1b4116e80c42172a1b4bc5e082d"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.636%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.50628. Missing scores are unknown.","source_id":"sr-0afc3ed5f8f70fcd69070418be2cb3a5"}],"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-1984c1b4116e80c42172a1b4bc5e082d","url":"https://github.com/advisories/GHSA-7m8f-hgjq-8gc9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-7m8f-hgjq-8gc9","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T02:28:46.523Z"},{"id":"sr-0afc3ed5f8f70fcd69070418be2cb3a5","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-2026-70646","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.063Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1984c1b4116e80c42172a1b4bc5e082d"],"technology":"aiosend","known_exclusions":[],"conditions_summary":"## Summary\n\n`WebhookHandler.feed_update()` deserializes the entire request body before verifying the HMAC signature. This allows an unauthenticated attacker to force expensive parsing of arbitrary JSON payloads that will ultimately be rejected, leading to unnecessary CPU and memory consumption.\n\n## Severity\n\n**High** (CVSS 7.5)\n\n```\nCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\n```\n\n## Affected Package\n\n- Ecosystem: PyPI\n- Package: `aiosend`\n\n## Affected Versions\n\n- `= 3.0.6`\n\n## Details\n\nIn `aiosend/webhook/base.py`, `WebhookHandler.feed_update()` performs full Pydantic deserialization before validating the webhook signature:\n\n```python\nupdate = Update.model_validate(body, context={\"client\": self})\nif not self._check_signature(body, headers):\n    return False\n```\n\nBecause authentication occurs only after parsing, anyone can send arbitrarily large JSON payloads with an invalid signature. Although the request is rejected, the server still performs all parsing work.\n\nAdditionally, `CryptoPayObject` is configured with:\n\n```python\nConfigDict(extra=\"allow\")\n```\n\nallowing arbitrary extra fields to be retained in memory, increasing resource consumption.\n\n","public_affected_ranges":["< 3.0.7"]}],"null_published_at":"2026-11-07T14:01:58.749Z","source_updated_at":"2026-08-06T14:38:22.000Z","source_disclosed_at":"2026-05-22T17:27:56.000Z","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":"2026-11-03T02:28:46.523Z"},{"id":"NVI-00015078","kind":"vulnerability","title":"aiosend: Deserialization of request body before signature verification (Pre-auth DoS) in webhook handler","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7m8f-hgjq-8gc9","CVE-2026-70646"],"plain_summary":"GitHub lists this reviewed advisory for aiosend. 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-1984c1b4116e80c42172a1b4bc5e082d"],"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":"2026-08-06T14:38:22.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1984c1b4116e80c42172a1b4bc5e082d"}],"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-1984c1b4116e80c42172a1b4bc5e082d","url":"https://github.com/advisories/GHSA-7m8f-hgjq-8gc9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-7m8f-hgjq-8gc9","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T02:28:46.523Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1984c1b4116e80c42172a1b4bc5e082d"],"technology":"aiosend","known_exclusions":[],"conditions_summary":"## Summary\n\n`WebhookHandler.feed_update()` deserializes the entire request body before verifying the HMAC signature. This allows an unauthenticated attacker to force expensive parsing of arbitrary JSON payloads that will ultimately be rejected, leading to unnecessary CPU and memory consumption.\n\n## Severity\n\n**High** (CVSS 7.5)\n\n```\nCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\n```\n\n## Affected Package\n\n- Ecosystem: PyPI\n- Package: `aiosend`\n\n## Affected Versions\n\n- `= 3.0.6`\n\n## Details\n\nIn `aiosend/webhook/base.py`, `WebhookHandler.feed_update()` performs full Pydantic deserialization before validating the webhook signature:\n\n```python\nupdate = Update.model_validate(body, context={\"client\": self})\nif not self._check_signature(body, headers):\n    return False\n```\n\nBecause authentication occurs only after parsing, anyone can send arbitrarily large JSON payloads with an invalid signature. Although the request is rejected, the server still performs all parsing work.\n\nAdditionally, `CryptoPayObject` is configured with:\n\n```python\nConfigDict(extra=\"allow\")\n```\n\nallowing arbitrary extra fields to be retained in memory, increasing resource consumption.\n\n","public_affected_ranges":["< 3.0.7"]}],"null_published_at":"2026-11-03T10:03:26.544Z","source_updated_at":"2026-08-06T14:38:22.000Z","source_disclosed_at":"2026-05-22T17:27:56.000Z","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":"2026-11-03T02:28:46.523Z"}],"next_cursor":null,"snapshot_revision":"42594"}