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CVE-2026-87866 is a vulnerability in curl classified as low severity by the curl project and fixed in version 8.23.0. Versions earlier than 8.23.0 are identified as affected, although the version that introduced the flaw is not specified. Technical details identifying the underlying weakness, vulnerable function, and exploitation mechanism are currently unavailable.
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No public exploit code observed for this vulnerability.
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A critical vulnerability affecting the curl library and related Echo packages. The advisory assigns a CVSS v3 base score of 9.8, indicating network-based exploitation with low complexity, no privileges or user interaction required, and high confidentiality, integrity, and availability impacts. The specific technical flaw is not described. The plugin states that no known exploits are available.
Low-severity vulnerability in curl fixed in version 8.23.0. The article provides no technical details.
A vulnerability affecting the Curl package on FreeBSD, listed in the advisory's Nessus plugin. Its specific mechanism and impact are not described. Updating affected packages is the stated remediation.
A critical vulnerability affecting the curl package, listed with a CVSS v3 base score of 9.8. The advisory indicates network accessibility, no required privileges or user interaction, and high confidentiality, integrity, and availability impacts. It does not describe the underlying flaw. The vendor indicates it will not be patched, and Nessus identifies exposure using vendor-reported package presence.
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.