Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2024-2466

CVE-2024-2466MEDIUM

curl curl — TLS certificate check bypass with mbedTLS

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  L  L  N    6.5   .0145   73.0     —

AFFECTED
  Product  Versions  Fixed
  curl     8.6.0 –   —

TIMELINE
  Mar 14  Reserved by curl
  Mar 27  Published (CNA: curl)
  Oct 15  EXPLOIT PUBLISHED — CVE-2024-2466 (curl). Public exploit reference added.

CWE-297 · CNA: curl · CVSS v3.1 · 15 references · NVD status: Modified

Description

libcurl did not check the server certificate of TLS connections done to a host specified as an IP address, when built to use mbedTLS. libcurl would wrongly avoid using the set hostname function when the specified hostname was given as an IP address, therefore completely skipping the certificate check. This affects all uses of TLS protocols (HTTPS, FTPS, IMAPS, POPS3, SMTPS, etc).

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 14, 2024	Reserved	Reserved by curl
March 27, 2024	Published	Published (CNA: curl)
October 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2024-2466 (curl). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
curl	curl	—	8.6.0	—

Weaknesses

CWE-297

References (15)

http://seclists.org/fulldisclosure/2024/Jul/18 [Mailing List, Third Party Advisory]
http://seclists.org/fulldisclosure/2024/Jul/19 [Mailing List, Third Party Advisory]
http://seclists.org/fulldisclosure/2024/Jul/20 [Mailing List, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2024/03/27/4 [Mailing List, Third Party Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-331112.html
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-417159.html
https://curl.se/docs/CVE-2024-2466.html [Vendor Advisory]
https://curl.se/docs/CVE-2024-2466.json [Vendor Advisory]
https://hackerone.com/reports/2416725 [Exploit, Issue Tracking, Third Party Advisory]
https://security.netapp.com/advisory/ntap-20240503-0010/ [Third Party Advisory]
https://support.apple.com/kb/HT214118 [Release Notes, Vendor Advisory]
https://support.apple.com/kb/HT214119 [Release Notes, Vendor Advisory]
https://support.apple.com/kb/HT214120 [Release Notes, Vendor Advisory]
https://www.vicarius.io/vsociety/posts/tls-certificate-check-bypass-curl-with-mbedtls-cve-2024-2466-2468 [Exploit, Mitigation, Third Party Advisory]

Authoritative record: CVE-2024-2466 at cve.org

Vendors: curl

Weaknesses: CWE-297

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-2466 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.