TLS certificate check bypass with mbedTLS
Priority MEDIUM 62CWE-297Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
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).
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01453 73rd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed Red Hat: 2 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| curl | curl | 8.6.0 – 8.6.0; 8.5.0 – 8.5.0 | — | No fix listed | CNA |
- curl Vendorcurl Affected 8.6.0 – 8.6.0; 8.5.0 – 8.5.0 Fixed in — No fix listed CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* | 8.5.0 to before 8.7.0 | Vulnerable | Haxx |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | before 12.7.6; 13.0 to before 13.6.8; 14.0 to before 14.6 | Vulnerable | Apple |
| cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
- cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* Versions 8.5.0 to before 8.7.0 Vulnerable ·Haxx
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 12.7.6; 13.0 to before 13.6.8; 14.0 to before 14.6 Vulnerable ·Apple
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
Remediation
Red Hat 2 advisories
- RHSA-2024:2693 Released 2024-05-07 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.57 SP4 security update
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl-8.7.1-2.el7jbcs, jbcs-httpd24-httpd-2.4.57-10.el7jbcs, jbcs-httpd24-httpd-devel-2.4.57-10.el7jbcs +17
- Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl-8.7.1-2.el8jbcs, jbcs-httpd24-httpd-2.4.57-10.el8jbcs, jbcs-httpd24-httpd-devel-2.4.57-10.el8jbcs +17
- RHSA-2024:2694 Released 2024-05-07 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.57 SP4 security update
- Red Hat JBoss Core Services
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Core Services | Fixed | RHSA-2024:2694 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2024:2693 |
| Red Hat JBoss Core Services on RHEL 8 | Fixed | RHSA-2024:2693 |
Not affected: 6 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2024-2466
- 2026-10-03 Alias added: GHSA-9xr6-qf7m-2jv5
- 2026-10-09 Fix available: RHSA-2024:2694 · Red Hat
- 2026-10-16 Fix available: Red Hat JBoss Core Services · Red Hat
References
Exploit 2
Advisory 10
- json
- www
- http://www.openwall.com/lists/oss-security/2024/03/27/4
- https://security.netapp.com/advisory/ntap-20240503-0010/
- https://support.apple.com/kb/HT214119
- https://support.apple.com/kb/HT214118
- https://support.apple.com/kb/HT214120
- http://seclists.org/fulldisclosure/2024/Jul/20
- http://seclists.org/fulldisclosure/2024/Jul/18
- http://seclists.org/fulldisclosure/2024/Jul/19
More curl vulnerabilities
- TI-2023-19922 Out-of-bounds write in curl CVSS 3.1CRITICAL 9.8
- TI-2026-16162 Negotiate ambient user conn reuse CVSS 3.1CRITICAL 9.8
- TI-2026-10231 cross-origin Digest auth state leak CVSS 3.1CRITICAL 9.8
- TI-2026-09063 HTTP/2 stream-dependency tree UAF CVSS 3.1CRITICAL 9.8
- TI-2026-07976 stale proxy password leak CVSS 3.1CRITICAL 9.8
- TI-2026-07845 SASL double-free CVSS 3.1CRITICAL 9.8
Sources
- CVE-2024-2466 · CVE Program
- CVE-2024-2466 · NVD
- FIRST EPSS
- GHSA-9xr6-qf7m-2jv5 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-2466 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences