{"items":[{"id":"NVI-00014057","kind":"vulnerability","title":"Kestra: SSRF via Pebble http() function allows unauthenticated access to internal services & cloud metadata","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-r56g-q4p6-m3p6","CVE-2026-73247"],"plain_summary":"GitHub lists this reviewed advisory for io.kestra:core, io.kestra:kestra-core. 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-05ba5c1718fcd7df5cf68bc35f2a194d"],"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":"2026-09-17T17:15:52.000Z","value":"8.6 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-39e11a3866d927e0a44aa9a54a1d933a"},{"kind":"CVSS","as_of":"2026-10-24T15:10:00.190Z","value":"8.6 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-13a3bd653a9f756cef5036606b559109"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.406%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.35083. Missing scores are unknown.","source_id":"sr-05ba5c1718fcd7df5cf68bc35f2a194d"}],"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-39e11a3866d927e0a44aa9a54a1d933a","url":"https://github.com/advisories/GHSA-r56g-q4p6-m3p6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r56g-q4p6-m3p6","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:49.409Z"},{"id":"sr-13a3bd653a9f756cef5036606b559109","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73247","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-73247","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T19:45:24.870Z"},{"id":"sr-05ba5c1718fcd7df5cf68bc35f2a194d","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-2026-73247","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.065Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-39e11a3866d927e0a44aa9a54a1d933a"],"technology":"io.kestra:core","known_exclusions":[],"conditions_summary":"### Summary\nThe Pebble template engine's `http()` function in Kestra OSS accepts user-controlled URLs without any validation, allowing Server-Side Request Forgery (SSRF) attacks. An unauthenticated attacker can import a malicious Flow YAML and execute it to access internal services, cloud metadata endpoints (AWS 169.254.169.254), or localhost services. The vulnerability affects all Kestra OSS deployments with default configuration.\n\n### Details\nThe root cause is in `core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java` (lines 77-106):\n\n1. **No URL validation**: User input is passed directly to `URI.create()` with no checks for private IPs, internal hosts, or restricted schemes\n2. **No IP filtering**: Missing checks for 10.0.0.0/8, 192.168.0.0/16, 169.254.169.254, 127.0.0.1\n3. **No scheme restriction**: `file://`, `gopher://` schemes are not blocked\n4. **No authentication required**: `TenantValidationFilter.java` only checks tenant == \"main\" — no authentication\n5. **Unconditional registration**: `HttpFunction` is registered without any feature flags in `Extension.java:180`\n\n### PoC\n**Prerequisites:**\n```bash\ndocker run -d --name kestra-ssrf -p 8080:8080 kestr","public_affected_ranges":["<= 1.3.31"]},{"certainty":"source_listed","source_ids":["sr-39e11a3866d927e0a44aa9a54a1d933a"],"technology":"io.kestra:kestra-core","known_exclusions":[],"conditions_summary":"### Summary\nThe Pebble template engine's `http()` function in Kestra OSS accepts user-controlled URLs without any validation, allowing Server-Side Request Forgery (SSRF) attacks. An unauthenticated attacker can import a malicious Flow YAML and execute it to access internal services, cloud metadata endpoints (AWS 169.254.169.254), or localhost services. The vulnerability affects all Kestra OSS deployments with default configuration.\n\n### Details\nThe root cause is in `core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java` (lines 77-106):\n\n1. **No URL validation**: User input is passed directly to `URI.create()` with no checks for private IPs, internal hosts, or restricted schemes\n2. **No IP filtering**: Missing checks for 10.0.0.0/8, 192.168.0.0/16, 169.254.169.254, 127.0.0.1\n3. **No scheme restriction**: `file://`, `gopher://` schemes are not blocked\n4. **No authentication required**: `TenantValidationFilter.java` only checks tenant == \"main\" — no authentication\n5. **Unconditional registration**: `HttpFunction` is registered without any feature flags in `Extension.java:180`\n\n### PoC\n**Prerequisites:**\n```bash\ndocker run -d --name kestra-ssrf -p 8080:8080 kestr","public_affected_ranges":["< 2.0.0"]}],"null_published_at":"2026-11-08T19:53:44.027Z","source_updated_at":"2026-09-17T17:15:52.000Z","source_disclosed_at":"2026-09-17T17:15:50.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T14:29:49.409Z"},{"id":"NVI-00014057","kind":"vulnerability","title":"Kestra: SSRF via Pebble http() function allows unauthenticated access to internal services & cloud metadata","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r56g-q4p6-m3p6","CVE-2026-73247"],"plain_summary":"GitHub lists this reviewed advisory for io.kestra:core, io.kestra:kestra-core. 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-05ba5c1718fcd7df5cf68bc35f2a194d"],"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":"2026-09-17T17:15:52.000Z","value":"8.6 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-39e11a3866d927e0a44aa9a54a1d933a"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.406%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.35083. Missing scores are unknown.","source_id":"sr-05ba5c1718fcd7df5cf68bc35f2a194d"}],"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-39e11a3866d927e0a44aa9a54a1d933a","url":"https://github.com/advisories/GHSA-r56g-q4p6-m3p6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r56g-q4p6-m3p6","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:49.409Z"},{"id":"sr-05ba5c1718fcd7df5cf68bc35f2a194d","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-2026-73247","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.065Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-39e11a3866d927e0a44aa9a54a1d933a"],"technology":"io.kestra:core","known_exclusions":[],"conditions_summary":"### Summary\nThe Pebble template engine's `http()` function in Kestra OSS accepts user-controlled URLs without any validation, allowing Server-Side Request Forgery (SSRF) attacks. An unauthenticated attacker can import a malicious Flow YAML and execute it to access internal services, cloud metadata endpoints (AWS 169.254.169.254), or localhost services. The vulnerability affects all Kestra OSS deployments with default configuration.\n\n### Details\nThe root cause is in `core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java` (lines 77-106):\n\n1. **No URL validation**: User input is passed directly to `URI.create()` with no checks for private IPs, internal hosts, or restricted schemes\n2. **No IP filtering**: Missing checks for 10.0.0.0/8, 192.168.0.0/16, 169.254.169.254, 127.0.0.1\n3. **No scheme restriction**: `file://`, `gopher://` schemes are not blocked\n4. **No authentication required**: `TenantValidationFilter.java` only checks tenant == \"main\" — no authentication\n5. **Unconditional registration**: `HttpFunction` is registered without any feature flags in `Extension.java:180`\n\n### PoC\n**Prerequisites:**\n```bash\ndocker run -d --name kestra-ssrf -p 8080:8080 kestr","public_affected_ranges":["<= 1.3.31"]},{"certainty":"source_listed","source_ids":["sr-39e11a3866d927e0a44aa9a54a1d933a"],"technology":"io.kestra:kestra-core","known_exclusions":[],"conditions_summary":"### Summary\nThe Pebble template engine's `http()` function in Kestra OSS accepts user-controlled URLs without any validation, allowing Server-Side Request Forgery (SSRF) attacks. An unauthenticated attacker can import a malicious Flow YAML and execute it to access internal services, cloud metadata endpoints (AWS 169.254.169.254), or localhost services. The vulnerability affects all Kestra OSS deployments with default configuration.\n\n### Details\nThe root cause is in `core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java` (lines 77-106):\n\n1. **No URL validation**: User input is passed directly to `URI.create()` with no checks for private IPs, internal hosts, or restricted schemes\n2. **No IP filtering**: Missing checks for 10.0.0.0/8, 192.168.0.0/16, 169.254.169.254, 127.0.0.1\n3. **No scheme restriction**: `file://`, `gopher://` schemes are not blocked\n4. **No authentication required**: `TenantValidationFilter.java` only checks tenant == \"main\" — no authentication\n5. **Unconditional registration**: `HttpFunction` is registered without any feature flags in `Extension.java:180`\n\n### PoC\n**Prerequisites:**\n```bash\ndocker run -d --name kestra-ssrf -p 8080:8080 kestr","public_affected_ranges":["< 2.0.0"]}],"null_published_at":"2026-11-06T07:24:11.259Z","source_updated_at":"2026-09-17T17:15:52.000Z","source_disclosed_at":"2026-09-17T17:15:50.000Z","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":"2026-11-01T14:29:49.409Z"},{"id":"NVI-00014057","kind":"vulnerability","title":"Kestra: SSRF via Pebble http() function allows unauthenticated access to internal services & cloud metadata","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r56g-q4p6-m3p6","CVE-2026-73247"],"plain_summary":"GitHub lists this reviewed advisory for io.kestra:core, io.kestra:kestra-core. 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-39e11a3866d927e0a44aa9a54a1d933a"],"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":"2026-09-17T17:15:52.000Z","value":"8.6 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-39e11a3866d927e0a44aa9a54a1d933a"}],"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-39e11a3866d927e0a44aa9a54a1d933a","url":"https://github.com/advisories/GHSA-r56g-q4p6-m3p6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r56g-q4p6-m3p6","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:49.409Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-39e11a3866d927e0a44aa9a54a1d933a"],"technology":"io.kestra:core","known_exclusions":[],"conditions_summary":"### Summary\nThe Pebble template engine's `http()` function in Kestra OSS accepts user-controlled URLs without any validation, allowing Server-Side Request Forgery (SSRF) attacks. An unauthenticated attacker can import a malicious Flow YAML and execute it to access internal services, cloud metadata endpoints (AWS 169.254.169.254), or localhost services. The vulnerability affects all Kestra OSS deployments with default configuration.\n\n### Details\nThe root cause is in `core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java` (lines 77-106):\n\n1. **No URL validation**: User input is passed directly to `URI.create()` with no checks for private IPs, internal hosts, or restricted schemes\n2. **No IP filtering**: Missing checks for 10.0.0.0/8, 192.168.0.0/16, 169.254.169.254, 127.0.0.1\n3. **No scheme restriction**: `file://`, `gopher://` schemes are not blocked\n4. **No authentication required**: `TenantValidationFilter.java` only checks tenant == \"main\" — no authentication\n5. **Unconditional registration**: `HttpFunction` is registered without any feature flags in `Extension.java:180`\n\n### PoC\n**Prerequisites:**\n```bash\ndocker run -d --name kestra-ssrf -p 8080:8080 kestr","public_affected_ranges":["<= 1.3.31"]},{"certainty":"source_listed","source_ids":["sr-39e11a3866d927e0a44aa9a54a1d933a"],"technology":"io.kestra:kestra-core","known_exclusions":[],"conditions_summary":"### Summary\nThe Pebble template engine's `http()` function in Kestra OSS accepts user-controlled URLs without any validation, allowing Server-Side Request Forgery (SSRF) attacks. An unauthenticated attacker can import a malicious Flow YAML and execute it to access internal services, cloud metadata endpoints (AWS 169.254.169.254), or localhost services. The vulnerability affects all Kestra OSS deployments with default configuration.\n\n### Details\nThe root cause is in `core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java` (lines 77-106):\n\n1. **No URL validation**: User input is passed directly to `URI.create()` with no checks for private IPs, internal hosts, or restricted schemes\n2. **No IP filtering**: Missing checks for 10.0.0.0/8, 192.168.0.0/16, 169.254.169.254, 127.0.0.1\n3. **No scheme restriction**: `file://`, `gopher://` schemes are not blocked\n4. **No authentication required**: `TenantValidationFilter.java` only checks tenant == \"main\" — no authentication\n5. **Unconditional registration**: `HttpFunction` is registered without any feature flags in `Extension.java:180`\n\n### PoC\n**Prerequisites:**\n```bash\ndocker run -d --name kestra-ssrf -p 8080:8080 kestr","public_affected_ranges":["< 2.0.0"]}],"null_published_at":"2026-11-02T10:00:37.201Z","source_updated_at":"2026-09-17T17:15:52.000Z","source_disclosed_at":"2026-09-17T17:15:50.000Z","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":"2026-11-01T14:29:49.409Z"}],"next_cursor":null,"snapshot_revision":"42594"}