# Haxx Curl vulnerabilities Source: https://junglewise.ai/threats/technologies/curl Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/curl.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 43 vulnerabilities in Haxx Curl: 0 in the last 7 days and 9 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-82209, was published on 6 September 2026. Nothing was published in the last eight weeks. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 9 - All time: 43 (3 critical, 0 exploited in the wild) ## About Haxx Curl Command-line tool and library for transferring data using URLs. ## Latest Haxx Curl vulnerabilities - [CVE-2026-82209: curl Public Suffix List domain boundary check bypass in cookie handling](https://junglewise.ai/threats/cve-2026-82209-curl-public-suffix-list-domain-boundary-check-bypass-in-cookie) (high, CVSS 8.2, published 6 Sep 2026) - [CVE-2026-82208: curl libcurl certificate validation bypass in wolfSSL backend](https://junglewise.ai/threats/cve-2026-82208-curl-libcurl-certificate-validation-bypass-in-wolfssl-backend) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-80255: curl secure cookie attribute bypass with tab](https://junglewise.ai/threats/cve-2026-80255-curl-secure-cookie-attribute-bypass-with-tab) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-80231: curl HTTPS connection reuse with mismatched CA store settings](https://junglewise.ai/threats/cve-2026-80231-curl-https-connection-reuse-with-mismatched-ca-store-settings) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-80230: curl public key pinning bypass with disabled peer verification](https://junglewise.ai/threats/cve-2026-80230-curl-public-key-pinning-bypass-with-disabled-peer-verification) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-80229: curl OpenSSL provider use-after-free in TLS connections](https://junglewise.ai/threats/cve-2026-80229-curl-openssl-provider-use-after-free-in-tls-connections) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-19931: curl Negotiate authentication connection reuse](https://junglewise.ai/threats/cve-2026-19931-curl-negotiate-authentication-connection-reuse) (critical, CVSS 9.8, published 6 Sep 2026) - [CVE-2026-18924: curl libcurl HTTP/2 server push use-after-free](https://junglewise.ai/threats/cve-2026-18924-curl-libcurl-http-2-server-push-use-after-free) (critical, CVSS 9.1, published 6 Sep 2026) - [CVE-2026-13608: libcurl SASL negotiation authentication bypass in LDAP](https://junglewise.ai/threats/cve-2026-13608-libcurl-sasl-negotiation-authentication-bypass-in-ldap) (high, CVSS 7.4, published 6 Sep 2026) - [CVE-2026-9547: curl libcurl improper host validation in SSH key callback](https://junglewise.ai/threats/cve-2026-9547-curl-libcurl-improper-host-validation-in-ssh-key-callback) (info, CVSS 0, published 3 Jul 2026) - [CVE-2026-9546: curl libcurl information exposure via persistent Referer header](https://junglewise.ai/threats/cve-2026-9546-curl-libcurl-information-exposure-via-persistent-referer-header) (info, published 3 Jul 2026) - [CVE-2026-9545: curl information exposure via HTTP/3 early data transmission](https://junglewise.ai/threats/cve-2026-9545-curl-information-exposure-via-http-3-early-data-transmission) (info, published 3 Jul 2026) - [CVE-2026-9080: curl libcurl use-after-free in CURLMOPT_SOCKETFUNCTION callback](https://junglewise.ai/threats/cve-2026-9080-curl-libcurl-use-after-free-in-curlmopt-socketfunction-callback) (info, CVSS 0, published 3 Jul 2026) - [CVE-2026-9079: curl libcurl stale proxy password leak](https://junglewise.ai/threats/cve-2026-9079-curl-libcurl-stale-proxy-password-leak) (info, CVSS 0, published 3 Jul 2026) - [CVE-2026-8926: curl password leak in .netrc credential lookup](https://junglewise.ai/threats/cve-2026-8926-curl-password-leak-in-netrc-credential-lookup) (info, published 3 Jul 2026) - [CVE-2026-8925: curl SASL double-free in GSASL context cleanup](https://junglewise.ai/threats/cve-2026-8925-curl-sasl-double-free-in-gsasl-context-cleanup) (info, CVSS 0, published 3 Jul 2026) - [CVE-2026-8924: curl cookie parsing bypass via trailing dot hostname](https://junglewise.ai/threats/cve-2026-8924-curl-cookie-parsing-bypass-via-trailing-dot-hostname) (info, CVSS 0, published 3 Jul 2026) - [CVE-2026-8286: curl wrong STARTTLS connection reuse](https://junglewise.ai/threats/cve-2026-8286-curl-wrong-starttls-connection-reuse) (info, published 3 Jul 2026) - [CVE-2026-12064: curl SSH host verification bypass via schemeless URLs and proto-default](https://junglewise.ai/threats/cve-2026-12064-curl-ssh-host-verification-bypass-via-schemeless-urls-and-proto) (info, CVSS 0, published 3 Jul 2026) - [CVE-2026-11856: curl libcurl cross-origin Digest authentication state leak](https://junglewise.ai/threats/cve-2026-11856-curl-libcurl-cross-origin-digest-authentication-state-leak) (info, published 3 Jul 2026) - [CVE-2026-11586: curl memory exhaustion in WebSocket PING handling](https://junglewise.ai/threats/cve-2026-11586-curl-memory-exhaustion-in-websocket-ping-handling) (info, published 3 Jul 2026) - [CVE-2026-11564: curl libcurl improper certificate validation via native CA trust persistence](https://junglewise.ai/threats/cve-2026-11564-curl-libcurl-improper-certificate-validation-via-native-ca-trust) (info, published 3 Jul 2026) - [CVE-2026-11352: curl QUIC infinite loop in UDP receive function](https://junglewise.ai/threats/cve-2026-11352-curl-quic-infinite-loop-in-udp-receive-function) (info, CVSS 0, published 3 Jul 2026) - [CVE-2026-7168: Successfully using libcurl to do a transfer over a specific HTTP proxy (`proxyA`) with **Digest** authentication and…](https://junglewise.ai/threats/cve-2026-7168-curl-libcurl-digest-auth-state-leak-when-changing-proxies) (medium, CVSS 5.3, published 13 May 2026) - [CVE-2026-7009: curl OCSP stapling bypass when using Apple SecTrust](https://junglewise.ai/threats/cve-2026-7009-curl-ocsp-stapling-bypass-when-using-apple-sectrust) (medium, CVSS 5.3, published 13 May 2026) ## Most severe Haxx Curl vulnerabilities - [CVE-2026-19931: curl Negotiate authentication connection reuse](https://junglewise.ai/threats/cve-2026-19931-curl-negotiate-authentication-connection-reuse) (critical, CVSS 9.8, published 6 Sep 2026) - [CVE-2023-38545: curl SOCKS5 heap buffer overflow during handshake](https://junglewise.ai/threats/cve-2023-38545-curl-socks5-heap-buffer-overflow-during-handshake) (critical, CVSS 9.8, published 18 Oct 2023) - [CVE-2026-18924: curl libcurl HTTP/2 server push use-after-free](https://junglewise.ai/threats/cve-2026-18924-curl-libcurl-http-2-server-push-use-after-free) (critical, CVSS 9.1, published 6 Sep 2026) - [CVE-2026-82209: curl Public Suffix List domain boundary check bypass in cookie handling](https://junglewise.ai/threats/cve-2026-82209-curl-public-suffix-list-domain-boundary-check-bypass-in-cookie) (high, CVSS 8.2, published 6 Sep 2026) - [CVE-2026-80231: curl HTTPS connection reuse with mismatched CA store settings](https://junglewise.ai/threats/cve-2026-80231-curl-https-connection-reuse-with-mismatched-ca-store-settings) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-80229: curl OpenSSL provider use-after-free in TLS connections](https://junglewise.ai/threats/cve-2026-80229-curl-openssl-provider-use-after-free-in-tls-connections) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-80255: curl secure cookie attribute bypass with tab](https://junglewise.ai/threats/cve-2026-80255-curl-secure-cookie-attribute-bypass-with-tab) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-5773: libcurl might in some circumstances reuse the wrong connection for SMB(S) transfers. libcurl features a pool of recent…](https://junglewise.ai/threats/cve-2026-5773-curl-libcurl-incorrect-connection-reuse-in-smb-transfers) (high, CVSS 7.5, published 13 May 2026) - [CVE-2026-80230: curl public key pinning bypass with disabled peer verification](https://junglewise.ai/threats/cve-2026-80230-curl-public-key-pinning-bypass-with-disabled-peer-verification) (high, CVSS 7.5, published 6 Sep 2026) - [CVE-2026-82208: curl libcurl certificate validation bypass in wolfSSL backend](https://junglewise.ai/threats/cve-2026-82208-curl-libcurl-certificate-validation-bypass-in-wolfssl-backend) (high, CVSS 7.5, published 6 Sep 2026) ## Vulnerabilities per week Nothing was published in the last eight weeks. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 9 | 2 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Haxx technologies - [Haxx Libcurl](https://junglewise.ai/threats/technologies/libcurl): 21 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Haxx Curl vulnerabilities", https://junglewise.ai/threats/technologies/curl, 9 November 2026.