{"id":"CVE-2023-23916","title":"An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the \"chained\" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differ…","summary":"An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the \"chained\" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differ…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-770","CWE-770","CWE-770"],"vendor":"haxx","product":"curl","affected":["curl >= 7.57.0, < 7.88.0","fedora = 36","debian_linux = 10.0","debian_linux = 11.0","h300s_firmware","h500s_firmware","h700s_firmware","h410s_firmware","clustered_data_ontap","universal_forwarder >= 8.2.0, < 8.2.12","universal_forwarder >= 9.0.0, < 9.0.6","universal_forwarder = 9.1.0"],"patched":["curl 7.88.0","universal_forwarder 9.0.6"],"published":"2023-02-23","updated":"2026-10-14","sourceUpdated":"2026-10-14T23:17:14.433","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-23916","references":[{"url":"https://hackerone.com/reports/1826048","label":"support@hackerone.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/02/msg00035.html","label":"support@hackerone.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/","label":"support@hackerone.com"},{"url":"https://security.gentoo.org/glsa/202310-12","label":"support@hackerone.com"},{"url":"https://security.netapp.com/advisory/ntap-20230309-0006/","label":"support@hackerone.com"},{"url":"https://www.debian.org/security/2023/dsa-5365","label":"support@hackerone.com"},{"url":"https://hackerone.com/reports/1826048","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2023/02/msg00035.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202310-12","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20230309-0006/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2023/dsa-5365","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.01703,"epssPercentile":0.76799,"ingestedAt":"2026-10-15T00:02:07.127Z","slug":"CVE-2023-23916","body":"## Overview\n\nAn allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the \"chained\" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable \"links\" in this \"decompression chain\" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a \"malloc bomb\", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.\n\n## Affected\n\n- `curl >= 7.57.0, < 7.88.0`\n- `fedora = 36`\n- `debian_linux = 10.0`\n- `debian_linux = 11.0`\n- `h300s_firmware`\n- `h500s_firmware`\n- `h700s_firmware`\n- `h410s_firmware`\n- `clustered_data_ontap`\n- `universal_forwarder >= 8.2.0, < 8.2.12`\n- `universal_forwarder >= 9.0.0, < 9.0.6`\n- `universal_forwarder = 9.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `curl 7.88.0`\n- `universal_forwarder 9.0.6`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}