{"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":"2026-04-27T17:17:35.083Z"},"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"]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-27T17:16:54.358163Z","id":"CVE-2026-6994","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-27T17:17:35.083Z"}}]}}