{"items":[{"id":"NVI-00011848","kind":"vulnerability","title":"Moov signedxml: Unauthenticated denial of service in exclusive XML canonicalization","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-5588-rp99-5fjh","CVE-2026-113729"],"plain_summary":"GitHub lists this reviewed advisory for github.com/moov-io/signedxml. 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-27a5374ed0e914a1fd7da0c7585a6dd2"],"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":"2026-10-21T16:27:58.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-43b069662e324cde72d522a2e9757d51"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.459%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.39758. Missing scores are unknown.","source_id":"sr-27a5374ed0e914a1fd7da0c7585a6dd2"}],"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-43b069662e324cde72d522a2e9757d51","url":"https://github.com/advisories/GHSA-5588-rp99-5fjh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-5588-rp99-5fjh","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"},{"id":"sr-27a5374ed0e914a1fd7da0c7585a6dd2","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-2026-113729","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.841Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-43b069662e324cde72d522a2e9757d51"],"technology":"github.com/moov-io/signedxml","known_exclusions":[],"conditions_summary":"Exclusive XML canonicalization (`http://www.w3.org/2001/10/xml-exc-c14n#`) in `github.com/moov-io/signedxml` copied the entire accumulated namespace map at every node during `ValidateReferences()`, before any reference digest or signature check.\n\nFor a chain of nested elements that each declare many unused namespace prefixes, that produced **O(m × depth²)** time and peak memory (`m` = prefixes per level). `beevik/etree` caps tree depth (~1024), but `m` is unbounded, so a small attacker-controlled document (on the order of 1 MB) could drive multi-gigabyte allocations and OOM the process. No valid signature, matching certificate, or authentication is required.\n\nThis is the library’s core path for SAML / WS-Federation service providers, which canonicalize attacker-supplied XML prior to authentication.\n\n### Affected\n\n- Package: `github.com/moov-io/signedxml`\n- Function: `ExclusiveCanonicalization` (`exclusivecanonicalization.go`)\n- Verified: **v1.4.0** and current default branch (commit `d79064a`). Earlier v1.2.x–v1.3.x releases are likely affected.\n \n\n### Remediation\n\nDo not copy the whole namespace map per node. Maintain a single scope and push/pop only the prefixes introduced at eac","public_affected_ranges":["<= 1.4.0"]}],"null_published_at":"2026-11-08T19:53:33.669Z","source_updated_at":"2026-10-21T16:27:58.000Z","source_disclosed_at":"2026-10-21T16:27:55.000Z","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":"2026-10-31T23:13:39.183Z"},{"id":"NVI-00011848","kind":"vulnerability","title":"Moov signedxml: Unauthenticated denial of service in exclusive XML canonicalization","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-5588-rp99-5fjh","CVE-2026-113729"],"plain_summary":"GitHub lists this reviewed advisory for github.com/moov-io/signedxml. 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-276b42463b89486e96fae8233476d0d5"],"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":"2026-10-21T16:27:58.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-43b069662e324cde72d522a2e9757d51"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.459%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.39775. Missing scores are unknown.","source_id":"sr-276b42463b89486e96fae8233476d0d5"}],"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-43b069662e324cde72d522a2e9757d51","url":"https://github.com/advisories/GHSA-5588-rp99-5fjh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-5588-rp99-5fjh","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"},{"id":"sr-276b42463b89486e96fae8233476d0d5","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-2026-113729","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.266Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-43b069662e324cde72d522a2e9757d51"],"technology":"github.com/moov-io/signedxml","known_exclusions":[],"conditions_summary":"Exclusive XML canonicalization (`http://www.w3.org/2001/10/xml-exc-c14n#`) in `github.com/moov-io/signedxml` copied the entire accumulated namespace map at every node during `ValidateReferences()`, before any reference digest or signature check.\n\nFor a chain of nested elements that each declare many unused namespace prefixes, that produced **O(m × depth²)** time and peak memory (`m` = prefixes per level). `beevik/etree` caps tree depth (~1024), but `m` is unbounded, so a small attacker-controlled document (on the order of 1 MB) could drive multi-gigabyte allocations and OOM the process. No valid signature, matching certificate, or authentication is required.\n\nThis is the library’s core path for SAML / WS-Federation service providers, which canonicalize attacker-supplied XML prior to authentication.\n\n### Affected\n\n- Package: `github.com/moov-io/signedxml`\n- Function: `ExclusiveCanonicalization` (`exclusivecanonicalization.go`)\n- Verified: **v1.4.0** and current default branch (commit `d79064a`). Earlier v1.2.x–v1.3.x releases are likely affected.\n \n\n### Remediation\n\nDo not copy the whole namespace map per node. Maintain a single scope and push/pop only the prefixes introduced at eac","public_affected_ranges":["<= 1.4.0"]}],"null_published_at":"2026-11-06T15:18:11.434Z","source_updated_at":"2026-10-21T16:27:58.000Z","source_disclosed_at":"2026-10-21T16:27:55.000Z","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":"2026-10-31T23:13:39.183Z"},{"id":"NVI-00011848","kind":"vulnerability","title":"Moov signedxml: Unauthenticated denial of service in exclusive XML canonicalization","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-5588-rp99-5fjh","CVE-2026-113729"],"plain_summary":"GitHub lists this reviewed advisory for github.com/moov-io/signedxml. 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-43b069662e324cde72d522a2e9757d51"],"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":"2026-10-21T16:27:58.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-43b069662e324cde72d522a2e9757d51"}],"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-43b069662e324cde72d522a2e9757d51","url":"https://github.com/advisories/GHSA-5588-rp99-5fjh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-5588-rp99-5fjh","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:13:39.183Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-43b069662e324cde72d522a2e9757d51"],"technology":"github.com/moov-io/signedxml","known_exclusions":[],"conditions_summary":"Exclusive XML canonicalization (`http://www.w3.org/2001/10/xml-exc-c14n#`) in `github.com/moov-io/signedxml` copied the entire accumulated namespace map at every node during `ValidateReferences()`, before any reference digest or signature check.\n\nFor a chain of nested elements that each declare many unused namespace prefixes, that produced **O(m × depth²)** time and peak memory (`m` = prefixes per level). `beevik/etree` caps tree depth (~1024), but `m` is unbounded, so a small attacker-controlled document (on the order of 1 MB) could drive multi-gigabyte allocations and OOM the process. No valid signature, matching certificate, or authentication is required.\n\nThis is the library’s core path for SAML / WS-Federation service providers, which canonicalize attacker-supplied XML prior to authentication.\n\n### Affected\n\n- Package: `github.com/moov-io/signedxml`\n- Function: `ExclusiveCanonicalization` (`exclusivecanonicalization.go`)\n- Verified: **v1.4.0** and current default branch (commit `d79064a`). Earlier v1.2.x–v1.3.x releases are likely affected.\n \n\n### Remediation\n\nDo not copy the whole namespace map per node. Maintain a single scope and push/pop only the prefixes introduced at eac","public_affected_ranges":["<= 1.4.0"]}],"null_published_at":"2026-11-01T01:03:56.610Z","source_updated_at":"2026-10-21T16:27:58.000Z","source_disclosed_at":"2026-10-21T16:27:55.000Z","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":"2026-10-31T23:13:39.183Z"}],"next_cursor":null,"snapshot_revision":"42594"}