CVE-2026-6994

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Affected is the function params.add of the file source/extensions/filters/http/header_mutation/header_mutation.cc of the component Query Parameter Handler. This manipulation causes injection. Remote exploitation of the attack is possible. Patch name: f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4. It is suggested to install a patch to address this issue."}], "id": "CVE-2026-6994", "lastModified": "2026-06-17T11:01:36.747", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6994", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-27T17:16:54.358163Z", "version": "2.0.3"}}]}, "published": "2026-04-25T19:16:00.360", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/envoyproxy/envoy/commit/f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4"}, {"source": "cna@vuldb.com", "url": "https://github.com/envoyproxy/envoy/pull/43502/"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/797241"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/359546"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/359546/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}, {"lang": "en", "value": "CWE-707"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{"bugzilla": {"description": "envoy: Envoy: Injection vulnerability in Query Parameter Handler", "id": "2461846", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461846"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-915", "details": ["A flaw was found in Envoy. A remote attacker could exploit a weakness in the Query Parameter Handler component, specifically within the `params.add` function. This vulnerability allows for injection, which may lead to limited impacts on the confidentiality, integrity, and availability of the affected system."], "name": "CVE-2026-6994", "package_state": [{"cpe": "cpe:/a:redhat:service_mesh:2", "fix_state": "Not affected", "package_name": "openshift-service-mesh/proxyv2-rhel9", "product_name": "OpenShift Service Mesh 2"}, {"cpe": "cpe:/a:redhat:service_mesh:3", "fix_state": "Not affected", "package_name": "openshift-service-mesh/istio-proxyv2-rhel9", "product_name": "OpenShift Service Mesh 3"}], "public_date": "2026-04-25T19:00:19Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-6994\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-6994\nhttps://github.com/envoyproxy/envoy/commit/f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4\nhttps://github.com/envoyproxy/envoy/pull/43502/\nhttps://vuldb.com/submit/797241\nhttps://vuldb.com/vuln/359546\nhttps://vuldb.com/vuln/359546/cti"], "threat_severity": "Moderate"}

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