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).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| curl | curl | 8.6.0 – ≤ 8.6.0, 8.5.0 – ≤ 8.5.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | curl | 8.7.1-1 | — |
| Debian 13 | curl | 8.7.1-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat JBoss Core Services 1 | jbcs-httpd24-curl +2 | 8.7.1-2.el7jbcs | RHSA-2024:2693 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-httpd +6 | 2.4.57-10.el7jbcs | RHSA-2024:2693 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_http2 | 1.15.19-37.el7jbcs | RHSA-2024:2693 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_jk +1 | 1.2.49-6.redhat_1.el7jbcs | RHSA-2024:2693 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_md | 1:2.4.24-6.el7jbcs | RHSA-2024:2693 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_proxy_cluster | 1.3.20-4.el7jbcs | RHSA-2024:2693 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_security | 2.9.3-36.el7jbcs | RHSA-2024:2693 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_ssl +1 | 1:2.4.57-10.el7jbcs | RHSA-2024:2693 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-nghttp2 +1 | 1.43.0-13.el7jbcs | RHSA-2024:2693 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.0 | curl | 8.6.0-3.1 | SUSE-SU-2025:20029-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | curl | 8.7.1-1.1 | openSUSE-SU-2024:13805-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | curl | 8.7.1-r0 | — |
| Alpine v3.23 | curl | 8.7.1-r0 | — |
| Alpine v3.22 | curl | 8.7.1-r0 | — |
| Alpine v3.21 | curl | 8.7.1-r0 | — |
| Alpine v3.20 | curl | 8.7.1-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | curl | 8.7.1-r0 | — |
| Alpine v3.18 | curl | 8.7.1-r0 | — |
| Alpine v3.17 | curl | 8.7.1-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | cmake | 3.30.3-2 | — |
| Azure Linux 3 | curl | 8.8.0-1 | — |
| Azure Linux 2 (CBL-Mariner) | curl | 8.8.0-1 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | curl | 8.7.1-r0 | — |
Advisories 15
- RHSA-2024:2693 Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.57 SP4 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2024-0726 cURL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 8, 2026
- SUSE-SU-2025:20029-1 Security update for curl SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2024:13805-1 curl-8.7.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1725 Apple macOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 11, 2026
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- NCSC-2024-0433 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Nov 12, 2024
- SSA-331112 SSA-331112: Multiple Vulnerabilities in SINEC NMS Before V3.0 SP1 Siemens ProductCERT · Nov 12, 2024
- ICSA-24-319-04 Siemens SINEC NMS CISA ICS & IT advisories · Nov 12, 2024
- NCSC-2024-0362 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Sep 10, 2024
- SSA-417159 SSA-417159: Multiple Vulnerabilities in SINEMA Remote Connect Client Before V3.2 SP2 Siemens ProductCERT · Sep 10, 2024
- ICSA-24-256-10 Siemens SINEMA CISA ICS & IT advisories · Sep 10, 2024
- NCSC-2024-0339 Kwetsbaarheden verholpen in Microsoft Mariner NCSC-NL (Netherlands) · Aug 13, 2024
- NCSC-2024-0320 Kwetsbaarheden verholpen in Apple MacOS NCSC-NL (Netherlands) · Jul 30, 2024
References
- json
- www
- issue
- 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