{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6994", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-04-24T19:49:39.070Z", "datePublished": "2026-04-25T19:00:19.151Z", "dateUpdated": "2026-04-25T19:00:19.151Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-04-25T19:00:19.151Z"}, "title": "Envoy Query Parameter header_mutation.cc params.add injection", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-74", "lang": "en", "description": "Injection"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-707", "lang": "en", "description": "Improper Neutralization"}]}], "affected": [{"vendor": "n/a", "product": "Envoy", "versions": [{"version": "1.0", "status": "affected"}, {"version": "1.1", "status": "affected"}, {"version": "1.2", "status": "affected"}, {"version": "1.3", "status": "affected"}, {"version": "1.4", "status": "affected"}, {"version": "1.5", "status": "affected"}, {"version": "1.6", "status": "affected"}, {"version": "1.7", "status": "affected"}, {"version": "1.8", "status": "affected"}, {"version": "1.9", "status": "affected"}, {"version": "1.10", "status": "affected"}, {"version": "1.11", "status": "affected"}, {"version": "1.12", "status": "affected"}, {"version": "1.13", "status": "affected"}, {"version": "1.14", "status": "affected"}, {"version": "1.15", "status": "affected"}, {"version": "1.16", "status": "affected"}, {"version": "1.17", "status": "affected"}, {"version": "1.18", "status": "affected"}, {"version": "1.19", "status": "affected"}, {"version": "1.20", "status": "affected"}, {"version": "1.21", "status": "affected"}, {"version": "1.22", "status": "affected"}, {"version": "1.23", "status": "affected"}, {"version": "1.24", "status": "affected"}, {"version": "1.25", "status": "affected"}, {"version": "1.26", "status": "affected"}, {"version": "1.27", "status": "affected"}, {"version": "1.28", "status": "affected"}, {"version": "1.29", "status": "affected"}, {"version": "1.30", "status": "affected"}, {"version": "1.31", "status": "affected"}, {"version": "1.32", "status": "affected"}, {"version": "1.33.0", "status": "affected"}], "modules": ["Query Parameter Handler"]}], "descriptions": [{"lang": "en", "value": "A weakness has been identified in Envoy up to 1.33.0. 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."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 6.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 6.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 6.5, "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C"}}], "timeline": [{"time": "2026-04-24T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-04-24T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-04-24T21:54:49.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "lukefr09 (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/359546", "name": "VDB-359546 | Envoy Query Parameter header_mutation.cc params.add injection", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/359546/cti", "name": "VDB-359546 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/797241", "name": "Submit #797241 | Envoy >= 1.33.0 Injection (CWE-74)", "tags": ["third-party-advisory"]}, {"url": "https://github.com/envoyproxy/envoy/pull/43502/", "tags": ["issue-tracking", "patch"]}, {"url": "https://github.com/envoyproxy/envoy/commit/f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4", "tags": ["patch"]}], "tags": ["x_freeware"]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A weakness has been identified in Envoy up to 1.33.0. 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": "2026-04-25T19:16:00.360", "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": "Primary"}], "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"}]}, "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": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}, {"lang": "en", "value": "CWE-707"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{}