CVE-2026-48142

{"id": "CVE-2026-48142", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48142", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-17T15:42:46.410409Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "f5sirt@f5.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.2}], "cvssMetricV40": [{"type": "Secondary", "source": "f5sirt@f5.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "f5sirt@f5.com", "affectedData": [{"vendor": "F5", "modules": ["ngx_http_charset_module"], "product": "NGINX Open Source", "versions": [{"status": "affected", "version": "1.13.10", "lessThan": "1.31.2", "versionType": "custom"}, {"status": "affected", "version": "1.30.0", "lessThan": "1.30.3", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "F5", "modules": ["ngx_http_charset_module"], "product": "NGINX Plus", "versions": [{"status": "affected", "version": "37.0", "lessThan": "37.0.2.1", "versionType": "custom"}, {"status": "affected", "version": "R36", "lessThan": "R36 P6", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-06-17T15:16:59.040", "references": [{"url": "https://my.f5.com/manage/s/article/K000161585", "tags": ["Vendor Advisory"], "source": "f5sirt@f5.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "f5sirt@f5.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module\u00a0module. When content is served or proxied through a location block with both source_charset\u00a0utf-8; and a charset\u00a0directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests (in conjunction with conditions beyond their control) to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart. \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}], "lastModified": "2026-08-11T15:03:44.877", "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:4.9.0:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "DACAC9CB-16D3-4F55-A466-70035779B387"}, {"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": "67499218-62EE-4217-897D-AF3E92D92E39", "versionEndIncluding": "2.6.3", "versionStartIncluding": "2.0.0"}, {"criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "E54B5C35-49D7-43F6-B57C-4606F75192CE", "versionEndIncluding": "3.7.2", "versionStartIncluding": "3.5.0"}, {"criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "DB6D172C-2716-40B9-B74C-D3029EDD171F", "versionEndIncluding": "4.0.1", "versionStartIncluding": "4.0.0"}, {"criteria": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "B4ED6BD2-BFBB-498C-9E43-508997695429", "versionEndIncluding": "5.5.0", "versionStartIncluding": "5.0.0"}, {"criteria": "cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BCFCE3FC-61E0-4749-8F09-EEB4B09B1218", "versionEndIncluding": "2.22.0", "versionStartIncluding": "2.17.0"}, {"criteria": "cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AD753AAB-7ADA-4B0D-A33B-74E149277C4D", "versionEndIncluding": "1.30.2", "versionStartIncluding": "1.0.0"}, {"criteria": "cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4B3A862B-427A-440A-93AB-FFA1FB2E3909", "versionEndIncluding": "1.31.1", "versionStartIncluding": "1.31.0"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:*:*:*:*:long-term_support:*:*:*", "vulnerable": true, "matchCriteriaId": "7B91F29E-E9A7-4EB3-8858-2786A85E3005", "versionEndExcluding": "37.0.2.1", "versionStartIncluding": "37.0.0.1"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:*:*:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "277F91F7-F75B-463E-A342-4624E52ED3ED", "versionEndExcluding": "r36", "versionStartIncluding": "r33"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:r36:-:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "6FCF8770-25AF-4A07-916B-16F50357A44E"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:r36:p1:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "D5C601A4-8DA6-443E-8284-6DCD34E4F3CB"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:r36:p2:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "EB6684A4-3869-4C21-B87A-129C30C99C28"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:r36:p3:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "B2AC5070-A6B7-440B-A45A-90E751FF103E"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:r36:p4:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "D7907F59-BBCC-4B5B-8BBC-92C14BB804D2"}, {"criteria": "cpe:2.3:a:f5:nginx_plus:r36:p5:*:*:continuous_releases:*:*:*", "vulnerable": true, "matchCriteriaId": "987F269A-A0F6-48D4-9C30-7F92A2267D45"}, {"criteria": "cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "EB1118B4-3EA7-4A69-8259-86BB8837FC00", "versionEndIncluding": "4.16.0", "versionStartIncluding": "4.10.0"}, {"criteria": "cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "2DB79E6C-08B0-4341-BCBE-B8070DDAA7AF", "versionEndIncluding": "5.8.0", "versionStartIncluding": "5.2.0"}, {"criteria": "cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*", "vulnerable": true, "matchCriteriaId": "03FC0AE0-1D26-4002-92DD-1895A38F6382", "versionEndIncluding": "5.13.1", "versionStartIncluding": "5.9.0"}], "operator": "OR"}]}], "sourceIdentifier": "f5sirt@f5.com"}