{"schema_version":1,"title":"oj (RubyGems) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 11 vulnerabilities in oj (RubyGems): 0 in the last 7 days and 11 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-54903, was published on 1 July 2026.","url":"https://junglewise.ai/threats/technologies/oj","json_url":"https://junglewise.ai/threats/technologies/oj.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/oj","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":10,"all_time":11,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":11,"last_365_days":11},"latest":[{"cve":"CVE-2026-54903","cvss":4,"epss":0.0043,"slug":"cve-2026-54903-ohler55-oj-integer-overflow-in-oj-load-heap-corruption","title":"ohler55 Oj integer overflow in Oj.load heap corruption","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.707+00:00","url":"https://junglewise.ai/threats/cve-2026-54903-ohler55-oj-integer-overflow-in-oj-load-heap-corruption"},{"cve":"CVE-2026-54902","cvss":4,"epss":0.0043,"slug":"cve-2026-54902-ohler55-oj-use-after-free-in-oj-parser-saj-mode","title":"ohler55 Oj use-after-free in Oj::Parser SAJ mode","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.587+00:00","url":"https://junglewise.ai/threats/cve-2026-54902-ohler55-oj-use-after-free-in-oj-parser-saj-mode"},{"cve":"CVE-2026-54901","cvss":4,"epss":0.0043,"slug":"cve-2026-54901-ohler55-oj-use-after-free-in-oj-parser-gc-marking","title":"ohler55 Oj Use-After-Free in Oj::Parser GC marking","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.467+00:00","url":"https://junglewise.ai/threats/cve-2026-54901-ohler55-oj-use-after-free-in-oj-parser-gc-marking"},{"cve":"CVE-2026-54900","cvss":4,"epss":0.0043,"slug":"cve-2026-54900-ohler55-oj-heap-corruption-in-oj-parser-via-integer-truncation","title":"ohler55 Oj heap corruption in Oj::Parser via integer truncation","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.34+00:00","url":"https://junglewise.ai/threats/cve-2026-54900-ohler55-oj-heap-corruption-in-oj-parser-via-integer-truncation"},{"cve":"CVE-2026-54899","cvss":4,"epss":0.0043,"slug":"cve-2026-54899-ohler55-oj-heap-use-after-free-in-oj-parser-symbol-keys-toggle","title":"ohler55 Oj heap use-after-free in Oj::Parser symbol_keys toggle","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.22+00:00","url":"https://junglewise.ai/threats/cve-2026-54899-ohler55-oj-heap-use-after-free-in-oj-parser-symbol-keys-toggle"},{"cve":"CVE-2026-54898","cvss":4,"epss":0.0017,"slug":"cve-2026-54898-ohler55-oj-heap-use-after-free-in-oj-parser-parse","title":"ohler55 Oj heap use-after-free in Oj::Parser#parse","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.103+00:00","url":"https://junglewise.ai/threats/cve-2026-54898-ohler55-oj-heap-use-after-free-in-oj-parser-parse"},{"cve":"CVE-2026-54897","cvss":4,"epss":0.0017,"slug":"cve-2026-54897-ohler55-oj-heap-use-after-free-in-oj-doc-iterators","title":"ohler55 Oj heap use-after-free in Oj::Doc iterators","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:32.983+00:00","url":"https://junglewise.ai/threats/cve-2026-54897-ohler55-oj-heap-use-after-free-in-oj-doc-iterators"},{"cve":"CVE-2026-54896","cvss":4,"epss":0.0017,"slug":"cve-2026-54896-ohler55-oj-heap-buffer-overflow-in-exception-serialization","title":"ohler55 Oj heap buffer overflow in Exception serialization","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:32.867+00:00","url":"https://junglewise.ai/threats/cve-2026-54896-ohler55-oj-heap-buffer-overflow-in-exception-serialization"},{"cve":"CVE-2026-54592","cvss":7.5,"epss":0.0046,"slug":"cve-2026-54592-ohler55-oj-stack-buffer-overflow-in-oj-doc-each-child","title":"ohler55 Oj stack buffer overflow in Oj::Doc#each_child","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:32.743+00:00","url":"https://junglewise.ai/threats/cve-2026-54592-ohler55-oj-stack-buffer-overflow-in-oj-doc-each-child"},{"cve":"CVE-2026-54502","cvss":4,"epss":0.0043,"slug":"cve-2026-54502-ohler55-oj-stack-buffer-overflow-in-oj-dump","title":"ohler55 Oj stack buffer overflow in Oj.dump","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:32.62+00:00","url":"https://junglewise.ai/threats/cve-2026-54502-ohler55-oj-stack-buffer-overflow-in-oj-dump"},{"cve":"CVE-2026-54500","cvss":5.3,"epss":0.0033,"slug":"cve-2026-54500-ohler55-oj-uninitialized-stack-memory-read-in-intern-c","title":"ohler55 Oj uninitialized stack memory read in intern.c","severity":"medium","exploited":false,"published_at":"2026-07-01T00:16:32.147+00:00","url":"https://junglewise.ai/threats/cve-2026-54500-ohler55-oj-uninitialized-stack-memory-read-in-intern-c"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":11},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"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}],"related":[{"name":"nokogiri (RubyGems)","slug":"nokogiri","vulnerabilities":27,"url":"https://junglewise.ai/threats/technologies/nokogiri"},{"name":"rack (RubyGems)","slug":"rack","vulnerabilities":14,"url":"https://junglewise.ai/threats/technologies/rack"},{"name":"jquery-rails (RubyGems)","slug":"jquery-rails","vulnerabilities":9,"url":"https://junglewise.ai/threats/technologies/jquery-rails"},{"name":"jquery-ui-rails (RubyGems)","slug":"jquery-ui-rails","vulnerabilities":8,"url":"https://junglewise.ai/threats/technologies/jquery-ui-rails"},{"name":"openc3 (RubyGems)","slug":"openc3","vulnerabilities":8,"url":"https://junglewise.ai/threats/technologies/openc3"},{"name":"lodash-rails (RubyGems)","slug":"lodash-rails","vulnerabilities":7,"url":"https://junglewise.ai/threats/technologies/lodash-rails"},{"name":"net-imap (RubyGems)","slug":"net-imap","vulnerabilities":7,"url":"https://junglewise.ai/threats/technologies/net-imap"},{"name":"loofah (RubyGems)","slug":"loofah","vulnerabilities":6,"url":"https://junglewise.ai/threats/technologies/loofah"},{"name":"action_text-trix (RubyGems)","slug":"action-text-trix","vulnerabilities":5,"url":"https://junglewise.ai/threats/technologies/action-text-trix"},{"name":"camaleon_cms (RubyGems)","slug":"camaleon-cms","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/camaleon-cms"},{"name":"fluentd (RubyGems)","slug":"fluentd","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/fluentd"},{"name":"view_component (RubyGems)","slug":"view-component","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/view-component"}],"technology":{"hub":true,"name":"oj (RubyGems)","slug":"oj","vendor":{"name":"RubyGems","slug":"rubygems","url":"https://junglewise.ai/threats/vendors/rubygems"},"aliases":[],"homepage":"http://www.ohler.com/oj/","repo_url":"https://github.com/ohler55/oj","description":"Oj is a fast JSON parser and object serializer for the Ruby programming language.","url":"https://junglewise.ai/threats/technologies/oj"},"most_severe":[{"cve":"CVE-2026-54592","cvss":7.5,"epss":0.0046,"slug":"cve-2026-54592-ohler55-oj-stack-buffer-overflow-in-oj-doc-each-child","title":"ohler55 Oj stack buffer overflow in Oj::Doc#each_child","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:32.743+00:00","url":"https://junglewise.ai/threats/cve-2026-54592-ohler55-oj-stack-buffer-overflow-in-oj-doc-each-child"},{"cve":"CVE-2026-54903","cvss":4,"epss":0.0043,"slug":"cve-2026-54903-ohler55-oj-integer-overflow-in-oj-load-heap-corruption","title":"ohler55 Oj integer overflow in Oj.load heap corruption","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.707+00:00","url":"https://junglewise.ai/threats/cve-2026-54903-ohler55-oj-integer-overflow-in-oj-load-heap-corruption"},{"cve":"CVE-2026-54902","cvss":4,"epss":0.0043,"slug":"cve-2026-54902-ohler55-oj-use-after-free-in-oj-parser-saj-mode","title":"ohler55 Oj use-after-free in Oj::Parser SAJ mode","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.587+00:00","url":"https://junglewise.ai/threats/cve-2026-54902-ohler55-oj-use-after-free-in-oj-parser-saj-mode"},{"cve":"CVE-2026-54901","cvss":4,"epss":0.0043,"slug":"cve-2026-54901-ohler55-oj-use-after-free-in-oj-parser-gc-marking","title":"ohler55 Oj Use-After-Free in Oj::Parser GC marking","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.467+00:00","url":"https://junglewise.ai/threats/cve-2026-54901-ohler55-oj-use-after-free-in-oj-parser-gc-marking"},{"cve":"CVE-2026-54900","cvss":4,"epss":0.0043,"slug":"cve-2026-54900-ohler55-oj-heap-corruption-in-oj-parser-via-integer-truncation","title":"ohler55 Oj heap corruption in Oj::Parser via integer truncation","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.34+00:00","url":"https://junglewise.ai/threats/cve-2026-54900-ohler55-oj-heap-corruption-in-oj-parser-via-integer-truncation"},{"cve":"CVE-2026-54899","cvss":4,"epss":0.0043,"slug":"cve-2026-54899-ohler55-oj-heap-use-after-free-in-oj-parser-symbol-keys-toggle","title":"ohler55 Oj heap use-after-free in Oj::Parser symbol_keys toggle","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.22+00:00","url":"https://junglewise.ai/threats/cve-2026-54899-ohler55-oj-heap-use-after-free-in-oj-parser-symbol-keys-toggle"},{"cve":"CVE-2026-54502","cvss":4,"epss":0.0043,"slug":"cve-2026-54502-ohler55-oj-stack-buffer-overflow-in-oj-dump","title":"ohler55 Oj stack buffer overflow in Oj.dump","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:32.62+00:00","url":"https://junglewise.ai/threats/cve-2026-54502-ohler55-oj-stack-buffer-overflow-in-oj-dump"},{"cve":"CVE-2026-54898","cvss":4,"epss":0.0017,"slug":"cve-2026-54898-ohler55-oj-heap-use-after-free-in-oj-parser-parse","title":"ohler55 Oj heap use-after-free in Oj::Parser#parse","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:33.103+00:00","url":"https://junglewise.ai/threats/cve-2026-54898-ohler55-oj-heap-use-after-free-in-oj-parser-parse"},{"cve":"CVE-2026-54897","cvss":4,"epss":0.0017,"slug":"cve-2026-54897-ohler55-oj-heap-use-after-free-in-oj-doc-iterators","title":"ohler55 Oj heap use-after-free in Oj::Doc iterators","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:32.983+00:00","url":"https://junglewise.ai/threats/cve-2026-54897-ohler55-oj-heap-use-after-free-in-oj-doc-iterators"},{"cve":"CVE-2026-54896","cvss":4,"epss":0.0017,"slug":"cve-2026-54896-ohler55-oj-heap-buffer-overflow-in-exception-serialization","title":"ohler55 Oj heap buffer overflow in Exception serialization","severity":"high","exploited":false,"published_at":"2026-07-01T00:16:32.867+00:00","url":"https://junglewise.ai/threats/cve-2026-54896-ohler55-oj-heap-buffer-overflow-in-exception-serialization"}],"generated_at":"2026-09-26T17:07:00.185783+00:00"}