{"items":[{"id":"NVI-00006321","kind":"vulnerability","title":"Denial of service caused by infinite recursion when parsing SVG document","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-ff5x-7qg5-vwf2","CVE-2023-50251"],"plain_summary":"OSV carries this publisher advisory for phenx/php-svg-lib. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 0.5.1 for phenx/php-svg-lib. Confirm the publisher’s latest guidance.","source_ids":["sr-b0150770e6c788d4e4d49e026dd70074"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4b389ecca43ec1e33b5570bf5792cb1e"],"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":"2026-06-17T06:39:23.090Z","value":"5.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-7953fde4fdb8ed7326680d8159facae4"},{"kind":"CVSS","as_of":"2026-06-17T06:39:23.090Z","value":"7.5 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-7953fde4fdb8ed7326680d8159facae4"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.878%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.59055. Missing scores are unknown.","source_id":"sr-4b389ecca43ec1e33b5570bf5792cb1e"}],"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-b0150770e6c788d4e4d49e026dd70074","url":"https://github.com/advisories/GHSA-ff5x-7qg5-vwf2","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ff5x-7qg5-vwf2","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.713Z"},{"id":"sr-7953fde4fdb8ed7326680d8159facae4","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50251","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2023-50251","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T00:58:59.624Z"},{"id":"sr-4b389ecca43ec1e33b5570bf5792cb1e","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-2023-50251","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b0150770e6c788d4e4d49e026dd70074"],"technology":"phenx/php-svg-lib","known_exclusions":[],"conditions_summary":"### Summary\nWhen parsing the attributes passed to a `use` tag inside an svg document, we can cause the system to go to an infinite recursion. Depending on the system configuration and attack pattern this could exhaust the memory available to the executing process and/or to the server itself.\n\n### Details\nInside `Svg\\Tag\\UseTag::before`, php-svg-lib parses the attributes passed to an `use` tag inside an svg document. When it finds a `href` or `xlink:href`, it will try to retrieve the object representing this tag:\n\n```\n$link = $attributes[\"href\"] ?? $attributes[\"xlink:href\"];\n$this->reference = $document->getDef($link);\n\nif ($this->reference) {\n    $this->reference->before($attributes);\n}\n```\n\n`$document->getDef` is implemented as follow:\n\n```\npublic function getDef($id) {\n    $id = ltrim($id, \"#\");\n\n    return isset($this->defs[$id]) ? $this->defs[$id] : null;\n}\n```\n\n_Note:_ the `$id` in the above method is actually the _link_ being used in `use` tag. This part is important, because this behaviour  here actually leads to the vulnerability. It will be mentioned later on in this report.\n\nIf it finds the referenced object, it will try to call the `before` method on the referenced objec","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 0.5.1"]}],"null_published_at":"2026-11-03T17:49:21.340Z","source_updated_at":"2024-02-16T07:59:27.512Z","source_disclosed_at":"2023-12-13T13:32:21.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.713Z"},{"id":"NVI-00006321","kind":"vulnerability","title":"Denial of service caused by infinite recursion when parsing SVG document","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-ff5x-7qg5-vwf2","CVE-2023-50251"],"plain_summary":"OSV carries this publisher advisory for phenx/php-svg-lib. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 0.5.1 for phenx/php-svg-lib. Confirm the publisher’s latest guidance.","source_ids":["sr-b0150770e6c788d4e4d49e026dd70074"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4b389ecca43ec1e33b5570bf5792cb1e"],"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":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.878%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.59055. Missing scores are unknown.","source_id":"sr-4b389ecca43ec1e33b5570bf5792cb1e"}],"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-b0150770e6c788d4e4d49e026dd70074","url":"https://github.com/advisories/GHSA-ff5x-7qg5-vwf2","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ff5x-7qg5-vwf2","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.713Z"},{"id":"sr-4b389ecca43ec1e33b5570bf5792cb1e","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-2023-50251","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b0150770e6c788d4e4d49e026dd70074"],"technology":"phenx/php-svg-lib","known_exclusions":[],"conditions_summary":"### Summary\nWhen parsing the attributes passed to a `use` tag inside an svg document, we can cause the system to go to an infinite recursion. Depending on the system configuration and attack pattern this could exhaust the memory available to the executing process and/or to the server itself.\n\n### Details\nInside `Svg\\Tag\\UseTag::before`, php-svg-lib parses the attributes passed to an `use` tag inside an svg document. When it finds a `href` or `xlink:href`, it will try to retrieve the object representing this tag:\n\n```\n$link = $attributes[\"href\"] ?? $attributes[\"xlink:href\"];\n$this->reference = $document->getDef($link);\n\nif ($this->reference) {\n    $this->reference->before($attributes);\n}\n```\n\n`$document->getDef` is implemented as follow:\n\n```\npublic function getDef($id) {\n    $id = ltrim($id, \"#\");\n\n    return isset($this->defs[$id]) ? $this->defs[$id] : null;\n}\n```\n\n_Note:_ the `$id` in the above method is actually the _link_ being used in `use` tag. This part is important, because this behaviour  here actually leads to the vulnerability. It will be mentioned later on in this report.\n\nIf it finds the referenced object, it will try to call the `before` method on the referenced objec","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 0.5.1"]}],"null_published_at":"2026-10-31T23:18:17.268Z","source_updated_at":"2024-02-16T07:59:27.512Z","source_disclosed_at":"2023-12-13T13:32:21.000Z","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":"2026-10-31T21:42:10.713Z"},{"id":"NVI-00006321","kind":"vulnerability","title":"Denial of service caused by infinite recursion when parsing SVG document","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-ff5x-7qg5-vwf2","CVE-2023-50251"],"plain_summary":"OSV carries this publisher advisory for phenx/php-svg-lib. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 0.5.1 for phenx/php-svg-lib. Confirm the publisher’s latest guidance.","source_ids":["sr-b0150770e6c788d4e4d49e026dd70074"],"action_type":"vendor_patch","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":[],"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-b0150770e6c788d4e4d49e026dd70074","url":"https://github.com/advisories/GHSA-ff5x-7qg5-vwf2","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ff5x-7qg5-vwf2","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.713Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b0150770e6c788d4e4d49e026dd70074"],"technology":"phenx/php-svg-lib","known_exclusions":[],"conditions_summary":"### Summary\nWhen parsing the attributes passed to a `use` tag inside an svg document, we can cause the system to go to an infinite recursion. Depending on the system configuration and attack pattern this could exhaust the memory available to the executing process and/or to the server itself.\n\n### Details\nInside `Svg\\Tag\\UseTag::before`, php-svg-lib parses the attributes passed to an `use` tag inside an svg document. When it finds a `href` or `xlink:href`, it will try to retrieve the object representing this tag:\n\n```\n$link = $attributes[\"href\"] ?? $attributes[\"xlink:href\"];\n$this->reference = $document->getDef($link);\n\nif ($this->reference) {\n    $this->reference->before($attributes);\n}\n```\n\n`$document->getDef` is implemented as follow:\n\n```\npublic function getDef($id) {\n    $id = ltrim($id, \"#\");\n\n    return isset($this->defs[$id]) ? $this->defs[$id] : null;\n}\n```\n\n_Note:_ the `$id` in the above method is actually the _link_ being used in `use` tag. This part is important, because this behaviour  here actually leads to the vulnerability. It will be mentioned later on in this report.\n\nIf it finds the referenced object, it will try to call the `before` method on the referenced objec","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 0.5.1"]}],"null_published_at":"2026-10-31T22:13:10.050Z","source_updated_at":"2024-02-16T07:59:27.512Z","source_disclosed_at":"2023-12-13T13:32:21.000Z","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":"2026-10-31T21:42:10.713Z"}],"next_cursor":null,"snapshot_revision":"39771"}