Description
When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of different URLs, potentially hosted by different servers and theclient can then download the file from one or several of them. In a serial orparallel manner.If one of the servers hosting the contents has been breached and the contentsof the specific file on that server is replaced with a modified payload, curlshould detect this when the hash of the file mismatches after a completeddownload. It should remove the contents and instead try getting the contentsfrom another URL. This is not done, and instead such a hash mismatch is onlymentioned in text and the potentially malicious content is kept in the file ondisk.
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 Tumbleweed | curl | 7.79.1-1.1 | openSUSE-SU-2024:10582-1 |
| 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 8 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 | — |
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 22
- 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
- openSUSE-SU-2024:10582-1 curl-7.79.1-1.1 on GA media SUSE / openSUSE Security Updates · 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
References
- https://hackerone.com/reports/1213175
- FEDORA-2021-5d21b90a30 vendor-advisory
- [kafka-dev] 20210831 Security vulnerabilities in kafka:2.13-2.6.0/2.7.0 docker image mailing-list
- [kafka-users] 20210831 Security vulnerabilities in kafka:2.13-2.6.0/2.7.0 docker image mailing-list
- [kafka-users] 20210901 Re: [EXTERNAL] Re: Security vulnerabilities in kafka:2.13-2.6.0/2.7.0 docker image mailing-list
- [kafka-dev] 20210901 Re: [EXTERNAL] Re: Security vulnerabilities in kafka:2.13-2.6.0/2.7.0 docker image mailing-list
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://security.netapp.com/advisory/ntap-20210902-0003/
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- GLSA-202212-01 vendor-advisory