{"schema_version":1,"title":"h2o (PyPI) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 18 vulnerabilities in h2o (PyPI): 0 in the last 7 days and 12 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-55213, was published on 10 July 2026.","url":"https://junglewise.ai/threats/technologies/h2o","json_url":"https://junglewise.ai/threats/technologies/h2o.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/h2o","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":1,"all_time":18,"critical":2,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":12,"last_365_days":17},"latest":[{"cve":"CVE-2026-55213","cvss":7.5,"slug":"cve-2026-55213-h2o-stack-overflow-in-qpack-http-3-processing","title":"h2o stack overflow in QPACK HTTP/3 processing","severity":"high","exploited":false,"published_at":"2026-07-10T21:16:55.497+00:00","url":"https://junglewise.ai/threats/cve-2026-55213-h2o-stack-overflow-in-qpack-http-3-processing"},{"cve":"CVE-2024-8616","cvss":3,"epss":0.0055,"slug":"cve-2024-8616-h2o-vulnerable-to-arbitrary-file-overwrite","title":"PYSEC-2026-1441 - H2O Vulnerable to Arbitrary File Overwrite","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:57.173944+00:00","url":"https://junglewise.ai/threats/cve-2024-8616-h2o-vulnerable-to-arbitrary-file-overwrite"},{"cve":"CVE-2024-8062","cvss":3,"epss":0.0047,"slug":"cve-2024-8062-h2o-vulnerable-to-denial-of-service-dos-via-head-request","title":"PYSEC-2026-1438 - H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:56.262232+00:00","url":"https://junglewise.ai/threats/cve-2024-8062-h2o-vulnerable-to-denial-of-service-dos-via-head-request"},{"cve":"CVE-2024-7768","cvss":3,"epss":0.0077,"slug":"cve-2024-7768-h2o-vulnerable-to-denial-of-service-dos-via-3-importfiles-endpoint","title":"PYSEC-2026-1443 - H2O Vulnerable to Denial of Service (DoS) via `/3/ImportFiles` Endpoint","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:56.021862+00:00","url":"https://junglewise.ai/threats/cve-2024-7768-h2o-vulnerable-to-denial-of-service-dos-via-3-importfiles-endpoint"},{"cve":"CVE-2024-7765","cvss":3,"epss":0.0076,"slug":"cve-2024-7765-h2o-vulnerable-to-denial-of-service-dos-via-large-gzip-parsing","title":"PYSEC-2026-1439 - H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:55.579044+00:00","url":"https://junglewise.ai/threats/cve-2024-7765-h2o-vulnerable-to-denial-of-service-dos-via-large-gzip-parsing"},{"cve":"CVE-2024-6863","cvss":3,"epss":0.0035,"slug":"cve-2024-6863-h2o-vulnerable-to-execution-of-arbitrary-files","title":"PYSEC-2026-1442 - H2O Vulnerable to Execution of Arbitrary Files","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:54.930265+00:00","url":"https://junglewise.ai/threats/cve-2024-6863-h2o-vulnerable-to-execution-of-arbitrary-files"},{"cve":"CVE-2024-6854","cvss":3,"epss":0.0076,"slug":"cve-2024-6854-h2o-vulnerable-to-arbitrary-file-overwrite-via-file-export","title":"PYSEC-2026-1436 - H2O Vulnerable to Arbitrary File Overwrite via File Export","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:54.751354+00:00","url":"https://junglewise.ai/threats/cve-2024-6854-h2o-vulnerable-to-arbitrary-file-overwrite-via-file-export"},{"cve":"CVE-2024-10572","cvss":3,"epss":0.0068,"slug":"cve-2024-10572-h2o-vulnerable-to-denial-of-service-dos-and-file-write","title":"PYSEC-2026-1444 - H2O Vulnerable to Denial of Service (DoS) and File Write","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:51.538324+00:00","url":"https://junglewise.ai/threats/cve-2024-10572-h2o-vulnerable-to-denial-of-service-dos-and-file-write"},{"cve":"CVE-2024-10550","cvss":3,"epss":0.0062,"slug":"cve-2024-10550-h2o-vulnerable-to-denial-of-service-dos-via-3-parsesetup-endpoint","title":"PYSEC-2026-1440 - H2O Vulnerable to Denial of Service (DoS) via `/3/ParseSetup` Endpoint","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:51.391868+00:00","url":"https://junglewise.ai/threats/cve-2024-10550-h2o-vulnerable-to-denial-of-service-dos-via-3-parsesetup-endpoint"},{"cve":"CVE-2024-10549","cvss":3,"epss":0.0062,"slug":"cve-2024-10549-h2o-vulnerable-to-denial-of-service-dos-via-3-parse-endpoint","title":"PYSEC-2026-1445 - H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:51.332109+00:00","url":"https://junglewise.ai/threats/cve-2024-10549-h2o-vulnerable-to-denial-of-service-dos-via-3-parse-endpoint"},{"cve":"CVE-2024-5979","cvss":3,"epss":0.0079,"slug":"cve-2024-5979-h2o-vulnerable-to-unexpected-post-request-shutting-down-server","title":"PYSEC-2026-1437 - h2o vulnerable to unexpected POST request shutting down server","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:35.823241+00:00","url":"https://junglewise.ai/threats/cve-2024-5979-h2o-vulnerable-to-unexpected-post-request-shutting-down-server"},{"cve":"CVE-2024-5550","cvss":3,"epss":0.0084,"slug":"cve-2024-5550-arbitrary-system-path-lookup-in-h20","title":"PYSEC-2026-1446 - Arbitrary system path lookup in h20","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:34.07819+00:00","url":"https://junglewise.ai/threats/cve-2024-5550-arbitrary-system-path-lookup-in-h20"},{"cve":"CVE-2024-5986","cvss":3,"epss":0.0067,"slug":"cve-2024-5986-h2o-has-an-external-control-of-file-name-or-path-vulnerability","title":"PYSEC-2026-353 - H2O has an External Control of File Name or Path vulnerability","severity":"low","exploited":false,"published_at":"2026-06-29T11:50:51.728938+00:00","url":"https://junglewise.ai/threats/cve-2024-5986-h2o-has-an-external-control-of-file-name-or-path-vulnerability"},{"cve":"CVE-2024-45758","cvss":3.1,"epss":0.0091,"slug":"cve-2024-45758-h2o-ai-h2o-vulnerable-to-deserialization-attacks-via-a-jdbc","title":"PYSEC-2026-352 - H2O.ai H2O vulnerable to deserialization attacks via a JDBC Connection URL","severity":"low","exploited":false,"published_at":"2026-06-29T11:50:41.149183+00:00","url":"https://junglewise.ai/threats/cve-2024-45758-h2o-ai-h2o-vulnerable-to-deserialization-attacks-via-a-jdbc"},{"cve":"CVE-2025-6544","cvss":3,"epss":0.0092,"slug":"cve-2025-6544-h2o-affected-by-a-deserialization-vulnerability","title":"PYSEC-2026-349 - H2O affected by a deserialization vulnerability","severity":"low","exploited":false,"published_at":"2026-06-29T11:50:37.630839+00:00","url":"https://junglewise.ai/threats/cve-2025-6544-h2o-affected-by-a-deserialization-vulnerability"},{"cve":"CVE-2024-10553","cvss":3,"epss":0.0159,"slug":"cve-2024-10553-h2o-deserialization-of-untrusted-data-vulnerability","title":"PYSEC-2026-351 - H2O Deserialization of Untrusted Data Vulnerability","severity":"low","exploited":false,"published_at":"2026-06-29T11:50:35.05854+00:00","url":"https://junglewise.ai/threats/cve-2024-10553-h2o-deserialization-of-untrusted-data-vulnerability"},{"cve":"CVE-2026-3960","cvss":9.8,"epss":0.0103,"slug":"cve-2026-3960-h2o-ai-h2o-3-remote-code-execution-in-importsqltable-api","title":"H2O.ai H2O-3 remote code execution in ImportSQLTable API","severity":"critical","exploited":false,"published_at":"2026-04-23T10:16:17.813+00:00","url":"https://junglewise.ai/threats/cve-2026-3960-h2o-ai-h2o-3-remote-code-execution-in-importsqltable-api"},{"cve":"CVE-2023-6569","cvss":9.3,"epss":0.0072,"slug":"cve-2023-6569-h2oai-h2o-3-arbitrary-file-overwrite-via-path-traversal","title":"h2oai h2o-3 arbitrary file overwrite via path traversal","severity":"critical","exploited":false,"published_at":"2023-12-14T15:30:22+00:00","url":"https://junglewise.ai/threats/cve-2023-6569-h2oai-h2o-3-arbitrary-file-overwrite-via-path-traversal"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":12},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"tensorflow (PyPI)","slug":"pypi-tensorflow","vulnerabilities":428,"url":"https://junglewise.ai/threats/technologies/pypi-tensorflow"},{"name":"tensorflow-cpu (PyPI)","slug":"tensorflow-cpu","vulnerabilities":424,"url":"https://junglewise.ai/threats/technologies/tensorflow-cpu"},{"name":"tensorflow-gpu (PyPI)","slug":"tensorflow-gpu","vulnerabilities":421,"url":"https://junglewise.ai/threats/technologies/tensorflow-gpu"},{"name":"open-webui (PyPI)","slug":"open-webui","vulnerabilities":177,"url":"https://junglewise.ai/threats/technologies/open-webui"},{"name":"Django (PyPI)","slug":"django","vulnerabilities":172,"url":"https://junglewise.ai/threats/technologies/django"},{"name":"apache-airflow (PyPI)","slug":"apache-airflow","vulnerabilities":152,"url":"https://junglewise.ai/threats/technologies/apache-airflow"},{"name":"plone (PyPI)","slug":"pypi-plone","vulnerabilities":101,"url":"https://junglewise.ai/threats/technologies/pypi-plone"},{"name":"praisonai (PyPI)","slug":"pypi-praisonai","vulnerabilities":86,"url":"https://junglewise.ai/threats/technologies/pypi-praisonai"},{"name":"exiv2 (PyPI)","slug":"exiv2","vulnerabilities":85,"url":"https://junglewise.ai/threats/technologies/exiv2"},{"name":"nltk (PyPI)","slug":"nltk","vulnerabilities":83,"url":"https://junglewise.ai/threats/technologies/nltk"},{"name":"mlflow (PyPI)","slug":"mlflow","vulnerabilities":82,"url":"https://junglewise.ai/threats/technologies/mlflow"},{"name":"pillow (PyPI)","slug":"pillow","vulnerabilities":79,"url":"https://junglewise.ai/threats/technologies/pillow"}],"technology":{"hub":true,"name":"h2o (PyPI)","slug":"h2o","vendor":{"name":"PyPI","slug":"pypi","url":"https://junglewise.ai/threats/vendors/pypi"},"aliases":[],"homepage":"https://h2o.ai/","repo_url":"https://github.com/h2oai/h2o-3","description":"A Python client for the H2O distributed machine learning platform.","url":"https://junglewise.ai/threats/technologies/h2o"},"most_severe":[{"cve":"CVE-2026-3960","cvss":9.8,"epss":0.0103,"slug":"cve-2026-3960-h2o-ai-h2o-3-remote-code-execution-in-importsqltable-api","title":"H2O.ai H2O-3 remote code execution in ImportSQLTable API","severity":"critical","exploited":false,"published_at":"2026-04-23T10:16:17.813+00:00","url":"https://junglewise.ai/threats/cve-2026-3960-h2o-ai-h2o-3-remote-code-execution-in-importsqltable-api"},{"cve":"CVE-2023-6569","cvss":9.3,"epss":0.0072,"slug":"cve-2023-6569-h2oai-h2o-3-arbitrary-file-overwrite-via-path-traversal","title":"h2oai h2o-3 arbitrary file overwrite via path traversal","severity":"critical","exploited":false,"published_at":"2023-12-14T15:30:22+00:00","url":"https://junglewise.ai/threats/cve-2023-6569-h2oai-h2o-3-arbitrary-file-overwrite-via-path-traversal"},{"cve":"CVE-2026-55213","cvss":7.5,"slug":"cve-2026-55213-h2o-stack-overflow-in-qpack-http-3-processing","title":"h2o stack overflow in QPACK HTTP/3 processing","severity":"high","exploited":false,"published_at":"2026-07-10T21:16:55.497+00:00","url":"https://junglewise.ai/threats/cve-2026-55213-h2o-stack-overflow-in-qpack-http-3-processing"},{"cve":"CVE-2024-45758","cvss":3.1,"epss":0.0091,"slug":"cve-2024-45758-h2o-ai-h2o-vulnerable-to-deserialization-attacks-via-a-jdbc","title":"PYSEC-2026-352 - H2O.ai H2O vulnerable to deserialization attacks via a JDBC Connection URL","severity":"low","exploited":false,"published_at":"2026-06-29T11:50:41.149183+00:00","url":"https://junglewise.ai/threats/cve-2024-45758-h2o-ai-h2o-vulnerable-to-deserialization-attacks-via-a-jdbc"},{"cve":"CVE-2024-10553","cvss":3,"epss":0.0159,"slug":"cve-2024-10553-h2o-deserialization-of-untrusted-data-vulnerability","title":"PYSEC-2026-351 - H2O Deserialization of Untrusted Data Vulnerability","severity":"low","exploited":false,"published_at":"2026-06-29T11:50:35.05854+00:00","url":"https://junglewise.ai/threats/cve-2024-10553-h2o-deserialization-of-untrusted-data-vulnerability"},{"cve":"CVE-2025-6544","cvss":3,"epss":0.0092,"slug":"cve-2025-6544-h2o-affected-by-a-deserialization-vulnerability","title":"PYSEC-2026-349 - H2O affected by a deserialization vulnerability","severity":"low","exploited":false,"published_at":"2026-06-29T11:50:37.630839+00:00","url":"https://junglewise.ai/threats/cve-2025-6544-h2o-affected-by-a-deserialization-vulnerability"},{"cve":"CVE-2024-5550","cvss":3,"epss":0.0084,"slug":"cve-2024-5550-arbitrary-system-path-lookup-in-h20","title":"PYSEC-2026-1446 - Arbitrary system path lookup in h20","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:34.07819+00:00","url":"https://junglewise.ai/threats/cve-2024-5550-arbitrary-system-path-lookup-in-h20"},{"cve":"CVE-2024-5979","cvss":3,"epss":0.0079,"slug":"cve-2024-5979-h2o-vulnerable-to-unexpected-post-request-shutting-down-server","title":"PYSEC-2026-1437 - h2o vulnerable to unexpected POST request shutting down server","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:35.823241+00:00","url":"https://junglewise.ai/threats/cve-2024-5979-h2o-vulnerable-to-unexpected-post-request-shutting-down-server"},{"cve":"CVE-2024-7768","cvss":3,"epss":0.0077,"slug":"cve-2024-7768-h2o-vulnerable-to-denial-of-service-dos-via-3-importfiles-endpoint","title":"PYSEC-2026-1443 - H2O Vulnerable to Denial of Service (DoS) via `/3/ImportFiles` Endpoint","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:56.021862+00:00","url":"https://junglewise.ai/threats/cve-2024-7768-h2o-vulnerable-to-denial-of-service-dos-via-3-importfiles-endpoint"},{"cve":"CVE-2024-7765","cvss":3,"epss":0.0076,"slug":"cve-2024-7765-h2o-vulnerable-to-denial-of-service-dos-via-large-gzip-parsing","title":"PYSEC-2026-1439 - H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing","severity":"low","exploited":false,"published_at":"2026-07-07T14:34:55.579044+00:00","url":"https://junglewise.ai/threats/cve-2024-7765-h2o-vulnerable-to-denial-of-service-dos-via-large-gzip-parsing"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}