CVE•Published 2026-09-06•Modified 2026-09-11•1 article on news•5 live references•NVD data
CVE-2026-18924Haxx · Curl
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS percentile
11
Exploit Prediction Scoring System · top 89% of all CVEs
Weaknesses (CWE)
Description
A flaw in libcurl's handling of HTTP/2 Server Push streams, when the parent handle is set to share connections with other handles, can lead to use-after-free in the cleanup process.
Timeline
Published 2026-09-06
Modified 2026-09-11
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-18924Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Haxx Curl"All exposed Haxx Curl instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Curl"HTTP body or banner mentions "Curl" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-18924Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-18924Censys host search filtered to this CVE id.
grep.app
CVE-2026-18924Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-18924GitHub code search for direct mentions.
Google dork
"CVE-2026-18924" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-18924 on GitHub.