{"items":[{"id":"NVI-00011764","kind":"vulnerability","title":"yawkat LZ4 Java: Native library extraction to a shared temporary directory is vulnerable to file replacement by another local user","revision":4,"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-mcr4-qmvw-px4g","CVE-2026-106451"],"plain_summary":"GitHub lists this reviewed advisory for at.yawk.lz4:lz4-java, org.lz4:lz4-java. 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-1793e5b74f613b54cfd320c205a8cd3f"],"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":"2026-10-07T19:17:32.463Z","value":"7.3 HIGH (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-6b3bb0a40fdd35a1e881e60ddc20ff2c"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.108%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.0119. Missing scores are unknown.","source_id":"sr-1793e5b74f613b54cfd320c205a8cd3f"}],"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-1e2166aa0f968aa6a797dba0bcc809e3","url":"https://github.com/advisories/GHSA-mcr4-qmvw-px4g","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mcr4-qmvw-px4g","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:58:38.867Z"},{"id":"sr-6b3bb0a40fdd35a1e881e60ddc20ff2c","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106451","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-106451","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:21.903Z"},{"id":"sr-1793e5b74f613b54cfd320c205a8cd3f","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-2026-106451","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:58:50.309Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1e2166aa0f968aa6a797dba0bcc809e3"],"technology":"at.yawk.lz4:lz4-java","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen no system-installed `liblz4-java` is found, `net.jpountz.util.Native.load()` extracts the bundled native library to `java.io.tmpdir` and loads it with `System.load`. The path of the extracted library can be predicted before it is created, and the library file is opened without exclusive creation. Another local user who can write to the same temporary directory can therefore create the file first and control the code that is loaded.\n\n### Details\n\n```java\ntempLibLock = File.createTempFile(\"liblz4-java-\", \".\" + os().libExtension + \".lck\");\ntempLib = new File(tempLibLock.getAbsolutePath().replaceFirst(\".lck$\", \"\"));\n// copy to tempLib\ntry (FileOutputStream out = new FileOutputStream(tempLib)) { ... }\n...\nSystem.load(tempLib.getAbsolutePath());\n```\n\nOnly the `.lck` file is created safely, with a random name and exclusive creation. The library path is the `.lck` name without the `.lck` suffix, and nothing reserves it. `new FileOutputStream(tempLib)` opens it with `O_CREAT|O_TRUNC` and follows symlinks.\n\nIn a shared, world-writable temporary directory, another user can watch for the `.lck` file and create the corresponding library file before it is opened. If they win th","public_affected_ranges":["<= 1.11.3"]},{"certainty":"source_listed","source_ids":["sr-1e2166aa0f968aa6a797dba0bcc809e3"],"technology":"org.lz4:lz4-java","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen no system-installed `liblz4-java` is found, `net.jpountz.util.Native.load()` extracts the bundled native library to `java.io.tmpdir` and loads it with `System.load`. The path of the extracted library can be predicted before it is created, and the library file is opened without exclusive creation. Another local user who can write to the same temporary directory can therefore create the file first and control the code that is loaded.\n\n### Details\n\n```java\ntempLibLock = File.createTempFile(\"liblz4-java-\", \".\" + os().libExtension + \".lck\");\ntempLib = new File(tempLibLock.getAbsolutePath().replaceFirst(\".lck$\", \"\"));\n// copy to tempLib\ntry (FileOutputStream out = new FileOutputStream(tempLib)) { ... }\n...\nSystem.load(tempLib.getAbsolutePath());\n```\n\nOnly the `.lck` file is created safely, with a random name and exclusive creation. The library path is the `.lck` name without the `.lck` suffix, and nothing reserves it. `new FileOutputStream(tempLib)` opens it with `O_CREAT|O_TRUNC` and follows symlinks.\n\nIn a shared, world-writable temporary directory, another user can watch for the `.lck` file and create the corresponding library file before it is opened. If they win th","public_affected_ranges":[">= 1.7.0, <= 1.8.1"]}],"null_published_at":"2026-11-08T19:53:38.939Z","source_updated_at":"2026-10-07T20:35:52.000Z","source_disclosed_at":"2026-10-07T20:35:51.000Z","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":"2026-11-01T00:58:38.867Z"},{"id":"NVI-00011764","kind":"vulnerability","title":"yawkat LZ4 Java: Native library extraction to a shared temporary directory is vulnerable to file replacement by another local user","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-mcr4-qmvw-px4g","CVE-2026-106451"],"plain_summary":"GitHub lists this reviewed advisory for at.yawk.lz4:lz4-java, org.lz4:lz4-java. 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-6cff7ee5449cb5fe5ac47497e7c380d9"],"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":"2026-10-07T19:17:32.463Z","value":"7.3 HIGH (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-6b3bb0a40fdd35a1e881e60ddc20ff2c"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.108%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.01173. Missing scores are unknown.","source_id":"sr-6cff7ee5449cb5fe5ac47497e7c380d9"}],"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-1e2166aa0f968aa6a797dba0bcc809e3","url":"https://github.com/advisories/GHSA-mcr4-qmvw-px4g","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mcr4-qmvw-px4g","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:58:38.867Z"},{"id":"sr-6b3bb0a40fdd35a1e881e60ddc20ff2c","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106451","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-106451","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:21.903Z"},{"id":"sr-6cff7ee5449cb5fe5ac47497e7c380d9","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-2026-106451","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.064Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1e2166aa0f968aa6a797dba0bcc809e3"],"technology":"at.yawk.lz4:lz4-java","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen no system-installed `liblz4-java` is found, `net.jpountz.util.Native.load()` extracts the bundled native library to `java.io.tmpdir` and loads it with `System.load`. The path of the extracted library can be predicted before it is created, and the library file is opened without exclusive creation. Another local user who can write to the same temporary directory can therefore create the file first and control the code that is loaded.\n\n### Details\n\n```java\ntempLibLock = File.createTempFile(\"liblz4-java-\", \".\" + os().libExtension + \".lck\");\ntempLib = new File(tempLibLock.getAbsolutePath().replaceFirst(\".lck$\", \"\"));\n// copy to tempLib\ntry (FileOutputStream out = new FileOutputStream(tempLib)) { ... }\n...\nSystem.load(tempLib.getAbsolutePath());\n```\n\nOnly the `.lck` file is created safely, with a random name and exclusive creation. The library path is the `.lck` name without the `.lck` suffix, and nothing reserves it. `new FileOutputStream(tempLib)` opens it with `O_CREAT|O_TRUNC` and follows symlinks.\n\nIn a shared, world-writable temporary directory, another user can watch for the `.lck` file and create the corresponding library file before it is opened. If they win th","public_affected_ranges":["<= 1.11.3"]},{"certainty":"source_listed","source_ids":["sr-1e2166aa0f968aa6a797dba0bcc809e3"],"technology":"org.lz4:lz4-java","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen no system-installed `liblz4-java` is found, `net.jpountz.util.Native.load()` extracts the bundled native library to `java.io.tmpdir` and loads it with `System.load`. The path of the extracted library can be predicted before it is created, and the library file is opened without exclusive creation. Another local user who can write to the same temporary directory can therefore create the file first and control the code that is loaded.\n\n### Details\n\n```java\ntempLibLock = File.createTempFile(\"liblz4-java-\", \".\" + os().libExtension + \".lck\");\ntempLib = new File(tempLibLock.getAbsolutePath().replaceFirst(\".lck$\", \"\"));\n// copy to tempLib\ntry (FileOutputStream out = new FileOutputStream(tempLib)) { ... }\n...\nSystem.load(tempLib.getAbsolutePath());\n```\n\nOnly the `.lck` file is created safely, with a random name and exclusive creation. The library path is the `.lck` name without the `.lck` suffix, and nothing reserves it. `new FileOutputStream(tempLib)` opens it with `O_CREAT|O_TRUNC` and follows symlinks.\n\nIn a shared, world-writable temporary directory, another user can watch for the `.lck` file and create the corresponding library file before it is opened. If they win th","public_affected_ranges":[">= 1.7.0, <= 1.8.1"]}],"null_published_at":"2026-11-07T07:07:42.484Z","source_updated_at":"2026-10-07T20:35:52.000Z","source_disclosed_at":"2026-10-07T20:35:51.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T00:58:38.867Z"},{"id":"NVI-00011764","kind":"vulnerability","title":"yawkat LZ4 Java: Native library extraction to a shared temporary directory is vulnerable to file replacement by another local user","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-mcr4-qmvw-px4g","CVE-2026-106451"],"plain_summary":"GitHub lists this reviewed advisory for at.yawk.lz4:lz4-java, org.lz4:lz4-java. 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-6cff7ee5449cb5fe5ac47497e7c380d9"],"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":"0.108%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.01173. Missing scores are unknown.","source_id":"sr-6cff7ee5449cb5fe5ac47497e7c380d9"}],"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-1e2166aa0f968aa6a797dba0bcc809e3","url":"https://github.com/advisories/GHSA-mcr4-qmvw-px4g","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mcr4-qmvw-px4g","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:58:38.867Z"},{"id":"sr-6cff7ee5449cb5fe5ac47497e7c380d9","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-2026-106451","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.064Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1e2166aa0f968aa6a797dba0bcc809e3"],"technology":"at.yawk.lz4:lz4-java","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen no system-installed `liblz4-java` is found, `net.jpountz.util.Native.load()` extracts the bundled native library to `java.io.tmpdir` and loads it with `System.load`. The path of the extracted library can be predicted before it is created, and the library file is opened without exclusive creation. Another local user who can write to the same temporary directory can therefore create the file first and control the code that is loaded.\n\n### Details\n\n```java\ntempLibLock = File.createTempFile(\"liblz4-java-\", \".\" + os().libExtension + \".lck\");\ntempLib = new File(tempLibLock.getAbsolutePath().replaceFirst(\".lck$\", \"\"));\n// copy to tempLib\ntry (FileOutputStream out = new FileOutputStream(tempLib)) { ... }\n...\nSystem.load(tempLib.getAbsolutePath());\n```\n\nOnly the `.lck` file is created safely, with a random name and exclusive creation. The library path is the `.lck` name without the `.lck` suffix, and nothing reserves it. `new FileOutputStream(tempLib)` opens it with `O_CREAT|O_TRUNC` and follows symlinks.\n\nIn a shared, world-writable temporary directory, another user can watch for the `.lck` file and create the corresponding library file before it is opened. If they win th","public_affected_ranges":["<= 1.11.3"]},{"certainty":"source_listed","source_ids":["sr-1e2166aa0f968aa6a797dba0bcc809e3"],"technology":"org.lz4:lz4-java","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen no system-installed `liblz4-java` is found, `net.jpountz.util.Native.load()` extracts the bundled native library to `java.io.tmpdir` and loads it with `System.load`. The path of the extracted library can be predicted before it is created, and the library file is opened without exclusive creation. Another local user who can write to the same temporary directory can therefore create the file first and control the code that is loaded.\n\n### Details\n\n```java\ntempLibLock = File.createTempFile(\"liblz4-java-\", \".\" + os().libExtension + \".lck\");\ntempLib = new File(tempLibLock.getAbsolutePath().replaceFirst(\".lck$\", \"\"));\n// copy to tempLib\ntry (FileOutputStream out = new FileOutputStream(tempLib)) { ... }\n...\nSystem.load(tempLib.getAbsolutePath());\n```\n\nOnly the `.lck` file is created safely, with a random name and exclusive creation. The library path is the `.lck` name without the `.lck` suffix, and nothing reserves it. `new FileOutputStream(tempLib)` opens it with `O_CREAT|O_TRUNC` and follows symlinks.\n\nIn a shared, world-writable temporary directory, another user can watch for the `.lck` file and create the corresponding library file before it is opened. If they win th","public_affected_ranges":[">= 1.7.0, <= 1.8.1"]}],"null_published_at":"2026-11-03T10:03:21.784Z","source_updated_at":"2026-10-07T20:35:52.000Z","source_disclosed_at":"2026-10-07T20:35:51.000Z","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":"2026-11-01T00:58:38.867Z"},{"id":"NVI-00011764","kind":"vulnerability","title":"yawkat LZ4 Java: Native library extraction to a shared temporary directory is vulnerable to file replacement by another local user","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-mcr4-qmvw-px4g","CVE-2026-106451"],"plain_summary":"GitHub lists this reviewed advisory for at.yawk.lz4:lz4-java, org.lz4:lz4-java. 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-1e2166aa0f968aa6a797dba0bcc809e3"],"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":[],"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-1e2166aa0f968aa6a797dba0bcc809e3","url":"https://github.com/advisories/GHSA-mcr4-qmvw-px4g","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mcr4-qmvw-px4g","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:58:38.867Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1e2166aa0f968aa6a797dba0bcc809e3"],"technology":"at.yawk.lz4:lz4-java","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen no system-installed `liblz4-java` is found, `net.jpountz.util.Native.load()` extracts the bundled native library to `java.io.tmpdir` and loads it with `System.load`. The path of the extracted library can be predicted before it is created, and the library file is opened without exclusive creation. Another local user who can write to the same temporary directory can therefore create the file first and control the code that is loaded.\n\n### Details\n\n```java\ntempLibLock = File.createTempFile(\"liblz4-java-\", \".\" + os().libExtension + \".lck\");\ntempLib = new File(tempLibLock.getAbsolutePath().replaceFirst(\".lck$\", \"\"));\n// copy to tempLib\ntry (FileOutputStream out = new FileOutputStream(tempLib)) { ... }\n...\nSystem.load(tempLib.getAbsolutePath());\n```\n\nOnly the `.lck` file is created safely, with a random name and exclusive creation. The library path is the `.lck` name without the `.lck` suffix, and nothing reserves it. `new FileOutputStream(tempLib)` opens it with `O_CREAT|O_TRUNC` and follows symlinks.\n\nIn a shared, world-writable temporary directory, another user can watch for the `.lck` file and create the corresponding library file before it is opened. If they win th","public_affected_ranges":["<= 1.11.3"]},{"certainty":"source_listed","source_ids":["sr-1e2166aa0f968aa6a797dba0bcc809e3"],"technology":"org.lz4:lz4-java","known_exclusions":[],"conditions_summary":"### Summary\n\nWhen no system-installed `liblz4-java` is found, `net.jpountz.util.Native.load()` extracts the bundled native library to `java.io.tmpdir` and loads it with `System.load`. The path of the extracted library can be predicted before it is created, and the library file is opened without exclusive creation. Another local user who can write to the same temporary directory can therefore create the file first and control the code that is loaded.\n\n### Details\n\n```java\ntempLibLock = File.createTempFile(\"liblz4-java-\", \".\" + os().libExtension + \".lck\");\ntempLib = new File(tempLibLock.getAbsolutePath().replaceFirst(\".lck$\", \"\"));\n// copy to tempLib\ntry (FileOutputStream out = new FileOutputStream(tempLib)) { ... }\n...\nSystem.load(tempLib.getAbsolutePath());\n```\n\nOnly the `.lck` file is created safely, with a random name and exclusive creation. The library path is the `.lck` name without the `.lck` suffix, and nothing reserves it. `new FileOutputStream(tempLib)` opens it with `O_CREAT|O_TRUNC` and follows symlinks.\n\nIn a shared, world-writable temporary directory, another user can watch for the `.lck` file and create the corresponding library file before it is opened. If they win th","public_affected_ranges":[">= 1.7.0, <= 1.8.1"]}],"null_published_at":"2026-11-01T01:03:56.601Z","source_updated_at":"2026-10-07T20:35:52.000Z","source_disclosed_at":"2026-10-07T20:35:51.000Z","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":"2026-11-01T00:58:38.867Z"}],"next_cursor":null,"snapshot_revision":"42594"}