{"items":[{"id":"NVI-00016276","kind":"vulnerability","title":"Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g7hg-vrcf-mvmr","CVE-2026-56821"],"plain_summary":"GitHub lists this reviewed advisory for io.netty:netty-handler-ssl-ocsp, io.netty:netty-handler-ssl-ocsp. 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-053cd366c0a816a806ea688763bd025e"],"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":"2026-07-22T21:46:41.000Z","value":"7.4 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-5d0cb71df6d361838cf50cc910f8dcaf"},{"kind":"EPSS","as_of":"2026-11-05T12:03:04.000Z","value":"0.219%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.12486. Missing scores are unknown.","source_id":"sr-053cd366c0a816a806ea688763bd025e"}],"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-5d0cb71df6d361838cf50cc910f8dcaf","url":"https://github.com/advisories/GHSA-g7hg-vrcf-mvmr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g7hg-vrcf-mvmr","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:39.734Z"},{"id":"sr-053cd366c0a816a806ea688763bd025e","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-2026-56821","publisher":"FIRST EPSS","observed_at":"2026-11-06T07:17:46.388Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5d0cb71df6d361838cf50cc910f8dcaf"],"technology":"io.netty:netty-handler-ssl-ocsp","known_exclusions":[],"conditions_summary":"### Summary\n`OcspServerCertificateValidator` flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as `VALID`, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate.\n\n### Details\nIn `io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered` the freshness check has no `return`, so execution falls through and a `VALID` `OcspValidationEvent` is still fired:\n\n```java\n                        if (!(current.after(response.getThisUpdate()) &&\n                                current.before(response.getNextUpdate()))) {\n                            ctx.fireExceptionCaught(new IllegalStateException(\"OCSP Response is out-of-date\"));\n                        }\n```\n\nNonce validation is optional and off by default, so freshness is the only replay defense — and it is not enforced. Additionally `getNextUpdate()` may be `null`, making `current.before(null)` throw `NullPointerException`.\n\nhttps://datatracker.ietf.org/doc/html/rfc6960#section-3.2\n\n```\n   5. The time at which the status being indicated is known to be\n      correct (thisUpdate) is sufficiently recent;\n\n   6","public_affected_ranges":[">= 4.2.0.Final, < 4.2.16.Final"]},{"certainty":"source_listed","source_ids":["sr-5d0cb71df6d361838cf50cc910f8dcaf"],"technology":"io.netty:netty-handler-ssl-ocsp","known_exclusions":[],"conditions_summary":"### Summary\n`OcspServerCertificateValidator` flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as `VALID`, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate.\n\n### Details\nIn `io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered` the freshness check has no `return`, so execution falls through and a `VALID` `OcspValidationEvent` is still fired:\n\n```java\n                        if (!(current.after(response.getThisUpdate()) &&\n                                current.before(response.getNextUpdate()))) {\n                            ctx.fireExceptionCaught(new IllegalStateException(\"OCSP Response is out-of-date\"));\n                        }\n```\n\nNonce validation is optional and off by default, so freshness is the only replay defense — and it is not enforced. Additionally `getNextUpdate()` may be `null`, making `current.before(null)` throw `NullPointerException`.\n\nhttps://datatracker.ietf.org/doc/html/rfc6960#section-3.2\n\n```\n   5. The time at which the status being indicated is known to be\n      correct (thisUpdate) is sufficiently recent;\n\n   6","public_affected_ranges":["< 4.1.136.Final"]}],"null_published_at":"2026-11-07T07:07:46.830Z","source_updated_at":"2026-07-22T21:46:41.000Z","source_disclosed_at":"2026-07-22T21:46:39.000Z","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":"2026-11-03T22:34:39.734Z"},{"id":"NVI-00016276","kind":"vulnerability","title":"Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g7hg-vrcf-mvmr","CVE-2026-56821"],"plain_summary":"GitHub lists this reviewed advisory for io.netty:netty-handler-ssl-ocsp, io.netty:netty-handler-ssl-ocsp. 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-08ec64c0730d884d0853c0ae9b35028e"],"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":"2026-07-22T21:46:41.000Z","value":"7.4 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-5d0cb71df6d361838cf50cc910f8dcaf"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.219%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.1251. Missing scores are unknown.","source_id":"sr-08ec64c0730d884d0853c0ae9b35028e"}],"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-5d0cb71df6d361838cf50cc910f8dcaf","url":"https://github.com/advisories/GHSA-g7hg-vrcf-mvmr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g7hg-vrcf-mvmr","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:39.734Z"},{"id":"sr-08ec64c0730d884d0853c0ae9b35028e","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-2026-56821","publisher":"FIRST EPSS","observed_at":"2026-11-04T23:33:33.052Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5d0cb71df6d361838cf50cc910f8dcaf"],"technology":"io.netty:netty-handler-ssl-ocsp","known_exclusions":[],"conditions_summary":"### Summary\n`OcspServerCertificateValidator` flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as `VALID`, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate.\n\n### Details\nIn `io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered` the freshness check has no `return`, so execution falls through and a `VALID` `OcspValidationEvent` is still fired:\n\n```java\n                        if (!(current.after(response.getThisUpdate()) &&\n                                current.before(response.getNextUpdate()))) {\n                            ctx.fireExceptionCaught(new IllegalStateException(\"OCSP Response is out-of-date\"));\n                        }\n```\n\nNonce validation is optional and off by default, so freshness is the only replay defense — and it is not enforced. Additionally `getNextUpdate()` may be `null`, making `current.before(null)` throw `NullPointerException`.\n\nhttps://datatracker.ietf.org/doc/html/rfc6960#section-3.2\n\n```\n   5. The time at which the status being indicated is known to be\n      correct (thisUpdate) is sufficiently recent;\n\n   6","public_affected_ranges":[">= 4.2.0.Final, < 4.2.16.Final"]},{"certainty":"source_listed","source_ids":["sr-5d0cb71df6d361838cf50cc910f8dcaf"],"technology":"io.netty:netty-handler-ssl-ocsp","known_exclusions":[],"conditions_summary":"### Summary\n`OcspServerCertificateValidator` flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as `VALID`, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate.\n\n### Details\nIn `io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered` the freshness check has no `return`, so execution falls through and a `VALID` `OcspValidationEvent` is still fired:\n\n```java\n                        if (!(current.after(response.getThisUpdate()) &&\n                                current.before(response.getNextUpdate()))) {\n                            ctx.fireExceptionCaught(new IllegalStateException(\"OCSP Response is out-of-date\"));\n                        }\n```\n\nNonce validation is optional and off by default, so freshness is the only replay defense — and it is not enforced. Additionally `getNextUpdate()` may be `null`, making `current.before(null)` throw `NullPointerException`.\n\nhttps://datatracker.ietf.org/doc/html/rfc6960#section-3.2\n\n```\n   5. The time at which the status being indicated is known to be\n      correct (thisUpdate) is sufficiently recent;\n\n   6","public_affected_ranges":["< 4.1.136.Final"]}],"null_published_at":"2026-11-06T07:24:11.289Z","source_updated_at":"2026-07-22T21:46:41.000Z","source_disclosed_at":"2026-07-22T21:46:39.000Z","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":"2026-11-03T22:34:39.734Z"},{"id":"NVI-00016276","kind":"vulnerability","title":"Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g7hg-vrcf-mvmr","CVE-2026-56821"],"plain_summary":"GitHub lists this reviewed advisory for io.netty:netty-handler-ssl-ocsp, io.netty:netty-handler-ssl-ocsp. 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-5d0cb71df6d361838cf50cc910f8dcaf"],"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":"2026-07-22T21:46:41.000Z","value":"7.4 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-5d0cb71df6d361838cf50cc910f8dcaf"}],"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-5d0cb71df6d361838cf50cc910f8dcaf","url":"https://github.com/advisories/GHSA-g7hg-vrcf-mvmr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g7hg-vrcf-mvmr","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:39.734Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5d0cb71df6d361838cf50cc910f8dcaf"],"technology":"io.netty:netty-handler-ssl-ocsp","known_exclusions":[],"conditions_summary":"### Summary\n`OcspServerCertificateValidator` flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as `VALID`, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate.\n\n### Details\nIn `io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered` the freshness check has no `return`, so execution falls through and a `VALID` `OcspValidationEvent` is still fired:\n\n```java\n                        if (!(current.after(response.getThisUpdate()) &&\n                                current.before(response.getNextUpdate()))) {\n                            ctx.fireExceptionCaught(new IllegalStateException(\"OCSP Response is out-of-date\"));\n                        }\n```\n\nNonce validation is optional and off by default, so freshness is the only replay defense — and it is not enforced. Additionally `getNextUpdate()` may be `null`, making `current.before(null)` throw `NullPointerException`.\n\nhttps://datatracker.ietf.org/doc/html/rfc6960#section-3.2\n\n```\n   5. The time at which the status being indicated is known to be\n      correct (thisUpdate) is sufficiently recent;\n\n   6","public_affected_ranges":[">= 4.2.0.Final, < 4.2.16.Final"]},{"certainty":"source_listed","source_ids":["sr-5d0cb71df6d361838cf50cc910f8dcaf"],"technology":"io.netty:netty-handler-ssl-ocsp","known_exclusions":[],"conditions_summary":"### Summary\n`OcspServerCertificateValidator` flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as `VALID`, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate.\n\n### Details\nIn `io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered` the freshness check has no `return`, so execution falls through and a `VALID` `OcspValidationEvent` is still fired:\n\n```java\n                        if (!(current.after(response.getThisUpdate()) &&\n                                current.before(response.getNextUpdate()))) {\n                            ctx.fireExceptionCaught(new IllegalStateException(\"OCSP Response is out-of-date\"));\n                        }\n```\n\nNonce validation is optional and off by default, so freshness is the only replay defense — and it is not enforced. Additionally `getNextUpdate()` may be `null`, making `current.before(null)` throw `NullPointerException`.\n\nhttps://datatracker.ietf.org/doc/html/rfc6960#section-3.2\n\n```\n   5. The time at which the status being indicated is known to be\n      correct (thisUpdate) is sufficiently recent;\n\n   6","public_affected_ranges":["< 4.1.136.Final"]}],"null_published_at":"2026-11-04T10:04:27.926Z","source_updated_at":"2026-07-22T21:46:41.000Z","source_disclosed_at":"2026-07-22T21:46:39.000Z","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":"2026-11-03T22:34:39.734Z"}],"next_cursor":null,"snapshot_revision":"42594"}