{"items":[{"id":"NVI-00018495","kind":"vulnerability","title":"LangChain Text Splitters: HTMLHeaderTextSplitter.split_text_from_url SSRF Redirect Bypass","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-fv5p-p927-qmxr","CVE-2026-41481"],"plain_summary":"GitHub lists this reviewed advisory for langchain-text-splitters. 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-30b0428be72b2be3b42b4916aa5f312d"],"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":"2026-06-06T00:58:50.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-30b0428be72b2be3b42b4916aa5f312d"}],"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-30b0428be72b2be3b42b4916aa5f312d","url":"https://github.com/advisories/GHSA-fv5p-p927-qmxr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-fv5p-p927-qmxr","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T00:52:42.537Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-30b0428be72b2be3b42b4916aa5f312d"],"technology":"langchain-text-splitters","known_exclusions":[],"conditions_summary":"## Summary\n\n`HTMLHeaderTextSplitter.split_text_from_url()` validated the initial URL using `validate_safe_url()` but then performed the fetch with `requests.get()` with redirects enabled (the default). Because redirect targets were not revalidated, a URL pointing to an attacker-controlled server could redirect to internal, localhost, or cloud metadata endpoints, bypassing SSRF protections.\n\nThe response body is parsed and returned as `Document` objects to the calling application code. Whether this constitutes a data exfiltration path depends on the application: if it exposes Document contents (or derivatives) back to the requester who supplied the URL, sensitive data from internal endpoints could be leaked. Applications that store or process Documents internally without returning raw content to the requester are not directly exposed to data exfiltration through this issue.\n\n## Affected versions\n\n- `langchain-text-splitters` = 1.1.2 (requires `langchain-core` >= 1.2.31)\n\n## Affected code\n\n**File:** `libs/text-splitters/langchain_text_splitters/html.py` — `split_text_from_url()`\n\nThe vulnerable pattern validated the URL once","public_affected_ranges":["< 1.1.2"]}],"null_published_at":"2026-11-07T07:07:39.843Z","source_updated_at":"2026-06-06T00:58:50.000Z","source_disclosed_at":"2026-04-16T22:53:32.000Z","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":"2026-11-07T00:52:42.537Z"}],"next_cursor":null,"snapshot_revision":"42594"}