{"items":[{"id":"NVI-00016429","kind":"vulnerability","title":"Potential remote code execution in Apache Tomcat","revision":2,"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-344f-f5vg-2jfj","CVE-2020-9484"],"plain_summary":"GitHub lists this reviewed advisory for org.apache.tomcat:tomcat-catalina, org.apache.tomcat:tomcat-catalina, org.apache.tomcat:tomcat-catalina, org.apache.tomcat:tomcat-catalina, org.apache.tomcat.embed:tomcat-embed-core. 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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":"2026-08-25T18:32:38.000Z","value":"7 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-70293e1d6a12e6404df8651df499fdaf"},{"kind":"CVSS","as_of":"2026-10-08T21:17:32.813Z","value":"4.4 MEDIUM (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-60430719cc9ddf1c84f160419508c3cc"},{"kind":"CVSS","as_of":"2026-10-08T21:17:32.813Z","value":"7 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-60430719cc9ddf1c84f160419508c3cc"}],"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-70293e1d6a12e6404df8651df499fdaf","url":"https://github.com/advisories/GHSA-344f-f5vg-2jfj","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-344f-f5vg-2jfj","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:37.775Z"},{"id":"sr-60430719cc9ddf1c84f160419508c3cc","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9484","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2020-9484","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-05T03:48:40.389Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat:tomcat-catalina","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 10.0.0-M1, <= 10.0.0-M4"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat:tomcat-catalina","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 9.0.0, < 9.0.35"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat:tomcat-catalina","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 8.0.0, < 8.5.55"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat:tomcat-catalina","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 7.0.0, < 7.0.104"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat.embed:tomcat-embed-core","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 10.0.0-M1, <= 10.0.0-M4"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat.embed:tomcat-embed-core","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 9.0.0, < 9.0.35"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat.embed:tomcat-embed-core","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 8.0.0, < 8.5.55"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat.embed:tomcat-embed-core","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 7.0.0, < 7.0.104"]}],"null_published_at":"2026-11-06T07:24:15.183Z","source_updated_at":"2026-08-25T18:32:38.000Z","source_disclosed_at":"2020-05-21T18:52:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-02T09:56:37.775Z"},{"id":"NVI-00016429","kind":"vulnerability","title":"Potential remote code execution in Apache Tomcat","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-344f-f5vg-2jfj","CVE-2020-9484"],"plain_summary":"GitHub lists this reviewed advisory for org.apache.tomcat:tomcat-catalina, org.apache.tomcat:tomcat-catalina, org.apache.tomcat:tomcat-catalina, org.apache.tomcat:tomcat-catalina, org.apache.tomcat.embed:tomcat-embed-core. 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This report has not examined your application.","related_sources":[{"id":"sr-70293e1d6a12e6404df8651df499fdaf","url":"https://github.com/advisories/GHSA-344f-f5vg-2jfj","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. 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Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 10.0.0-M1, <= 10.0.0-M4"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat:tomcat-catalina","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 9.0.0, < 9.0.35"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat:tomcat-catalina","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 8.0.0, < 8.5.55"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat:tomcat-catalina","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 7.0.0, < 7.0.104"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat.embed:tomcat-embed-core","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 10.0.0-M1, <= 10.0.0-M4"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat.embed:tomcat-embed-core","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 9.0.0, < 9.0.35"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat.embed:tomcat-embed-core","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 8.0.0, < 8.5.55"]},{"certainty":"source_listed","source_ids":["sr-70293e1d6a12e6404df8651df499fdaf"],"technology":"org.apache.tomcat.embed:tomcat-embed-core","known_exclusions":[],"conditions_summary":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","public_affected_ranges":[">= 7.0.0, < 7.0.104"]}],"null_published_at":"2026-11-04T10:04:27.943Z","source_updated_at":"2026-08-25T18:32:38.000Z","source_disclosed_at":"2020-05-21T18:52:29.000Z","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":"2026-11-02T09:56:37.775Z"}],"next_cursor":null,"snapshot_revision":"42594"}