{"items":[{"id":"NVI-00013885","kind":"vulnerability","title":"PraisonAI has a Browser Server WebSocket origin validation bypass via unanchored regex (patch bypass of CVE-2026-40289 / GHSA-8x8f-54wf-vv92)","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-6g6r-q6gw-w8fg","CVE-2026-55536"],"plain_summary":"GitHub lists this reviewed advisory for PraisonAI. 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-1a1891dfe8b2556b9c88f8054e431345"],"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":"2026-08-25T15:22:17.000Z","value":"9.1 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1668b7ff0d108729bd0db2962d36f769"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.521%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.44274. Missing scores are unknown.","source_id":"sr-1a1891dfe8b2556b9c88f8054e431345"}],"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-1668b7ff0d108729bd0db2962d36f769","url":"https://github.com/advisories/GHSA-6g6r-q6gw-w8fg","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-6g6r-q6gw-w8fg","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:37.775Z"},{"id":"sr-1a1891dfe8b2556b9c88f8054e431345","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-2026-55536","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.788Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1668b7ff0d108729bd0db2962d36f769"],"technology":"PraisonAI","known_exclusions":[],"conditions_summary":"### Summary\n\n`praisonai/browser/server.py` validates incoming WebSocket connections using a Chrome\nextension Origin check. The regex `chrome-extension://[a-z0-9]{32}` is applied with\n`re.match()`, which **only anchors at the start of the string, not the end**. Any Origin\nheader with more than 32 alphanumeric characters after `chrome-extension://` — including\nnon-alphanumeric trailing characters — passes the check.\n\nThis is a **patch bypass** of GHSA-8x8f-54wf-vv92. That advisory triggered the addition\nof origin validation; this finding shows the validation is bypassable by any WebSocket\nclient that forges an Origin header. After bypassing, the attacker can send `start_session`\ncommands that are executed by any Chrome extension currently connected to the server —\ncausing the extension to perform arbitrary browser automation including cookie theft and\nscreenshot capture.\n\n### Details\n\n**Vulnerable code — `browser/server.py` line 186:**\n\n```python\nelif parsed_origin.scheme == \"chrome-extension\" and \\\n     re.match(r\"chrome-extension://[a-z0-9]{32}\", origin):\n    is_allowed = True\n```\n\n`re.match()` returns a match object if the pattern matches at the **beginning** of the\nstring; traili","public_affected_ranges":["< 4.6.58"]}],"null_published_at":"2026-11-07T14:01:55.390Z","source_updated_at":"2026-08-25T15:22:17.000Z","source_disclosed_at":"2026-08-25T15:22:16.000Z","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":"2026-11-02T09:56:37.775Z"},{"id":"NVI-00013885","kind":"vulnerability","title":"PraisonAI has a Browser Server WebSocket origin validation bypass via unanchored regex (patch bypass of CVE-2026-40289 / GHSA-8x8f-54wf-vv92)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-6g6r-q6gw-w8fg","CVE-2026-55536"],"plain_summary":"GitHub lists this reviewed advisory for PraisonAI. 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-1668b7ff0d108729bd0db2962d36f769"],"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":"2026-08-25T15:22:17.000Z","value":"9.1 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1668b7ff0d108729bd0db2962d36f769"}],"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-1668b7ff0d108729bd0db2962d36f769","url":"https://github.com/advisories/GHSA-6g6r-q6gw-w8fg","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-6g6r-q6gw-w8fg","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:37.775Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1668b7ff0d108729bd0db2962d36f769"],"technology":"PraisonAI","known_exclusions":[],"conditions_summary":"### Summary\n\n`praisonai/browser/server.py` validates incoming WebSocket connections using a Chrome\nextension Origin check. The regex `chrome-extension://[a-z0-9]{32}` is applied with\n`re.match()`, which **only anchors at the start of the string, not the end**. Any Origin\nheader with more than 32 alphanumeric characters after `chrome-extension://` — including\nnon-alphanumeric trailing characters — passes the check.\n\nThis is a **patch bypass** of GHSA-8x8f-54wf-vv92. That advisory triggered the addition\nof origin validation; this finding shows the validation is bypassable by any WebSocket\nclient that forges an Origin header. After bypassing, the attacker can send `start_session`\ncommands that are executed by any Chrome extension currently connected to the server —\ncausing the extension to perform arbitrary browser automation including cookie theft and\nscreenshot capture.\n\n### Details\n\n**Vulnerable code — `browser/server.py` line 186:**\n\n```python\nelif parsed_origin.scheme == \"chrome-extension\" and \\\n     re.match(r\"chrome-extension://[a-z0-9]{32}\", origin):\n    is_allowed = True\n```\n\n`re.match()` returns a match object if the pattern matches at the **beginning** of the\nstring; traili","public_affected_ranges":["< 4.6.58"]}],"null_published_at":"2026-11-02T10:00:37.168Z","source_updated_at":"2026-08-25T15:22:17.000Z","source_disclosed_at":"2026-08-25T15:22:16.000Z","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":"2026-11-02T09:56:37.775Z"}],"next_cursor":null,"snapshot_revision":"42594"}