{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-34355: Apache HTTP Server: mod_proxy_html buffer overflow","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-34355","status":"final","version":"1","initial_release_date":"2026-06-08T15:20:30.900Z","current_release_date":"2026-06-08T22:32:23.731Z","revision_history":[{"date":"2026-06-08T15:20:30.900Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend.\nUsers are recommended to upgrade to version 2.4.68, which fixes this issue.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-34355 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-34355"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-34355"},{"category":"external","summary":"httpd.apache.org","url":"https://httpd.apache.org/security/vulnerabilities_24.html"}]},"product_tree":{"branches":[{"category":"vendor","name":"Apache Software Foundation","branches":[{"category":"product_name","name":"Apache HTTP Server","branches":[{"category":"product_version_range","name":">=2.4.0 <=2.4.67","product":{"name":"Apache Software Foundation Apache HTTP Server >=2.4.0 <=2.4.67","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:apache_software_foundation:apache_http_server:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-34355","title":"Apache HTTP Server: mod_proxy_html buffer overflow","notes":[{"category":"description","text":"A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend.\nUsers are recommended to upgrade to version 2.4.68, which fixes this issue.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}