CVE-2026-42945

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"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-42945", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477116", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42945.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "f5sirt@f5.com", "description": [{"lang": "en", "value": "CWE-122"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-131"}]}], "descriptions": [{"lang": "en", "value": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module\u00a0module. This vulnerability exists when the rewrite\u00a0directive is followed by a rewrite, if, or set\u00a0directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.\u00a0 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}], "lastModified": "2026-09-10T13:20:09.723", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:f5:dos:*:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "0772572C-26F9-4FA4-B9E6-BA40ED59F569", "versionEndIncluding": "4.7.0", "versionStartIncluding": "4.3.0"}, {"criteria": "cpe:2.3:a:f5:dos:4.8.0:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "C45452BD-7A86-48E7-8E1D-1B340FF70B3B"}, {"criteria": "cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "15B7F1FD-0C49-460F-9CB8-23DA730EC4BE", "versionEndIncluding": "1.6.2", "versionStartIncluding": "1.3.0"}, {"criteria": "cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CE4363AD-0E25-4A27-A45B-A436605626F0", "versionEndIncluding": "2.5.1", "versionStartIncluding": "2.0.0"}, {"criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "10D5B143-4C1E-4626-8B49-3EA7160E9256", "versionEndIncluding": "3.7.2", "versionStartIncluding": "3.5.0"}, {"criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "73A1CDBB-49F6-4AB6-AA67-542FD8017D6A", "versionEndIncluding": "4.0.1", "versionStartIncluding": "4.0.0"}, {"criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "653E97B6-7BC8-4427-B875-F19E9CE6A04B", "versionEndIncluding": "5.4.1", "versionStartIncluding": "5.0.0"}, {"criteria": "cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "32EC06F0-3263-43FF-B855-EF903E6FFE7C", "versionEndIncluding": "2.21.1", "versionStartIncluding": "2.16.0"}, {"criteria": "cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "35DC1B89-E400-429C-9360-303F69D2BF3A", "versionEndIncluding": "1.30.0", "versionStartIncluding": "0.6.27"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0B153576-468F-48C2-9BC8-922A938AB235", "versionEndIncluding": "r36", "versionStartIncluding": "r32"}, {"criteria": "cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "F365BA5A-42D7-4024-9143-06D4DEE31212", "versionEndIncluding": "4.16.0", "versionStartIncluding": "4.9.0"}, {"criteria": "cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "8D720985-9119-480E-929A-7D9D5C083628", "versionEndIncluding": "5.8.0", "versionStartIncluding": "5.1.0"}, {"criteria": "cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "DE69C522-7FCB-4452-8E33-FCC72D36BF94", "versionEndIncluding": "5.12.1", "versionStartIncluding": "5.9.0"}], "operator": "OR"}]}], "sourceIdentifier": "f5sirt@f5.com"}