Description
When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | https://github.com/curl/curl | curl 7.27.0 to and including 7.77.0 | — |
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 | 7.79.1-1 | — |
| Debian 13 | curl | 7.79.1-1 | — |
| Debian 12 | curl | 7.79.1-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | curl +3 | 7.61.1-18.el8_4.1 | RHSA-2021:3582 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.2 EUS | curl +3 | 7.61.1-12.el8_2.3 | RHSA-2021:3903 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | curl | 7.61.1-18.el8_4.1 | RLSA-2021:3582 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | curl | 7.66.0-4.22.1 | SUSE-SU-2021:2439-1 |
| SLES 15 SP2 | curl | 7.66.0-4.22.1 | SUSE-SU-2021:2439-1 |
| SLES 15 SP1 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SLES 15 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SLES 12 SP5 | curl | 7.60.0-11.23.1 | SUSE-SU-2021:2462-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | curl | 7.60.0-4.25.1 | SUSE-SU-2021:2425-1 |
| SLES 11 | curl-openssl1 | 7.37.0-70.71.1 | SUSE-SU-2021:14768-1 |
| SLES for SAP 15 SP1 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SLES for SAP 15 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SLES for SAP 12 SP5 | curl | 7.60.0-11.23.1 | SUSE-SU-2021:2462-1 |
| SLES for SAP 12 SP4 | curl | 7.60.0-4.25.1 | SUSE-SU-2021:2425-1 |
| SLE Micro 5.0 | curl | 7.66.0-4.22.1 | SUSE-SU-2021:2439-1 |
| SLE HPC 15 SP1 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SLE HPC 15 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SUSE OpenStack Cloud Crowbar 9 | curl | 7.60.0-4.25.1 | SUSE-SU-2021:2425-1 |
| SUSE OpenStack Cloud 9 | curl | 7.60.0-4.25.1 | SUSE-SU-2021:2425-1 |
| SUSE Manager Server 4.0 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SUSE Manager Retail Branch Server 4.0 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SUSE Manager Proxy 4.0 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
| SUSE Enterprise Storage 6 | curl | 7.60.0-3.47.1 | SUSE-SU-2021:2440-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | curl | 7.66.0-4.22.1 | openSUSE-SU-2021:2439-1 |
| openSUSE Leap 15.2 | curl +1 | 7.66.0-lp152.3.21.1 | openSUSE-SU-2021:1088-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | curl | 7.78.0-r0 | — |
| Alpine v3.23 | curl | 7.78.0-r0 | — |
| Alpine v3.22 | curl | 7.78.0-r0 | — |
| Alpine v3.21 | curl | 7.78.0-r0 | — |
| Alpine v3.20 | curl | 7.78.0-r0 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | curl | 7.78.0-r0 | — |
| Alpine v3.18 | curl | 7.78.0-r0 | — |
| Alpine v3.17 | curl | 7.78.0-r0 | — |
| Alpine v3.16 | curl | 7.78.0-r0 | — |
| Alpine v3.15 | curl | 7.78.0-r0 | — |
| Alpine v3.14 | curl | 7.78.0-r0 | — |
| Alpine v3.13 | curl | 7.78.0-r0 | — |
| Alpine v3.12 | curl | 7.78.0-r0 | — |
| Alpine v3.11 | curl | 7.79.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | curl +2 | 7.76.1-7.amzn2.0.2 | ALAS2-2021-1700 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | curl | 7.76.0-5 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | curl +3 | 7.61.1-18.el8_4.1 | ELSA-2021-3582 |
Advisories 21
- RHSA-2021:3903 Red Hat Security Advisory: curl security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2021:3582 Red Hat Security Advisory: curl 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-2023-1350 Splunk Splunk Enterprise: Mehrere Schwachstellen in Komponenten von Drittanbietern BSI CERT-Bund (WID) · Jul 1, 2026
- RLSA-2021:3582 Moderate: curl security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2021:2462-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:14768-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2440-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2439-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2425-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1088-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2026-0180 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 20, 2026
- WID-SEC-2023-2229 Splunk Splunk Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 18, 2025
- ALAS2-2021-1700 Moderate: curl security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 23, 2025
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- VDE-2022-010 PHOENIX CONTACT: Multiple Linux component vulnerabilities fixed in latest AXC F x152 LTS release CERT@VDE · May 22, 2025
- openSUSE-SU-2021:2439-1 Security update for curl SUSE / openSUSE Security Updates · May 7, 2025
- ICSA-22-069-09 Siemens SINEC INS CISA ICS & IT advisories · May 6, 2025
- WID-SEC-2022-0874 cURL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 4, 2023
- SSA-389290 SSA-389290: Third-Party Component Vulnerabilities in SINEC INS Siemens ProductCERT · Mar 8, 2022
- ELSA-2021-3582 Moderate: curl security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 21, 2021