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CVE-2026-6429 is a credential-disclosure vulnerability in libcurl versions 7.14.0 through 8.19.0 inclusive. When netrc-based credentials and HTTP redirect following are enabled, libcurl can leak the password used for the original host to the redirect destination. Exploitation requires both URLs to use cleartext HTTP, both requests to traverse the same HTTP proxy, and reuse of the same proxied connection. The curl command-line tool is not affected. The vulnerability is fixed in libcurl 8.20.0.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
24 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A credential-disclosure vulnerability in libcurl can leak a password from the original host to a redirect destination when .netrc credentials and HTTP redirect following are both enabled. The reference reports a CVSS v3 base score of 5.3, available exploits, and a security update.
A vulnerability referenced by an AlmaLinux 9.6 local security-check advisory. No technical vulnerability details are provided.
A vulnerability covered by an AlmaLinux 9.2 local-security-check notice. The notice states exploits are available and provides a patch publication date, but does not describe the flaw's technical nature.
A vulnerability in curl/libcurl addressed by the Huawei EulerOS SA-2026-3408 security advisory; no technical flaw type is provided.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.