Description
During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server
(with reason `HTTP_1_1_REQUIRED` or `REFUSED_STREAM`) leading to a use after
free of a `struct Curl_easy` object.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| curl | curl | 8.22.0 – ≤ 8.22.0, 8.21.0 – ≤ 8.21.0, 8.20.0 – ≤ 8.20.0, 8.19.0 – ≤ 8.19.0, 8.18.0 – ≤ 8.18.0, 8.17.0 – ≤ 8.17.0, 8.16.0 – ≤ 8.16.0, 8.15.0 – ≤ 8.15.0, 8.14.1 – ≤ 8.14.1, 8.14.0 – ≤ 8.14.0, 8.13.0 – ≤ 8.13.0, 8.12.1 – ≤ 8.12.1, 8.12.0 – ≤ 8.12.0 | — |
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 | No fix yet | — |
| Debian 13 | curl | 8.14.1-2+deb13u7 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | curl | 8.20.0-2ubuntu11.1 | USN-8927-2 |
| Ubuntu 26.04 LTS | curl | 8.18.0-1ubuntu2.8 | USN-8927-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | curl +3 | 8.23.0-0.1.hum1 | RHSA-2026:82895 |
| Red Hat Hardened Images 1 | rust +18 | 1.99.0-1.hum1 | RHSA-2026:80349 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | curl +3 | 8.12.1-4.el10_2.8 | ALSA-2026:96092 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | curl | 8.12.1-4.el10_2.8 | RLSA-2026:96092 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | curl | 8.22.0-150700.7.33.1 | SUSE-SU-2026:5068-1 |
| SLES 15 SP6 | curl | 8.22.0-150600.4.58.1 | SUSE-SU-2026:5069-1 |
| SLES 15 SP5 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
| SLES 15 SP4 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | curl | 8.22.0-150600.4.58.1 | SUSE-SU-2026:5069-1 |
| SLE Micro 5.5 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
| SLE Micro 5.4 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
| SLE Micro 5.3 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
| SLE HPC 15 SP5 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
| SLE HPC 15 SP4 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
| SUSE Linux Enterprise Installer Updates 15 SP5 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
| SUSE Linux Enterprise Installer Updates 15 SP4 | curl | 8.14.1-150400.5.98.1 | SUSE-SU-2026:4954-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | curl | 8.23.0-1.1 | openSUSE-SU-2026:12150-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | curl | 8.23.0-r0 | — |
| Alpine v3.23 | curl | 8.23.0-r0 | — |
| Alpine v3.22 | curl | 8.14.1-r4 | — |
| Alpine v3.21 | curl | 8.14.1-r3 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | curl +4 | 8.21.0-5.amzn2023.0.3 | ALAS2023-2026-3267 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | rust +1 | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | curl +3 | 8.12.1-4.el10_2.8 | ELSA-2026-96092 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | curl | 8.23.0-r0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
ashu7ank/CVE-2026-92392 ★ 0 · Oct 14, 2026
Defensive exposure checker and poc for cURL CVE-2026-92392
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 13
- WID-SEC-2026-3904 cURL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- RLSA-2026:96092 Important: curl security update Rocky Linux Security Advisories · Nov 10, 2026
- ALSA-2026:96092 Important: curl security update AlmaLinux Security Advisories · Nov 9, 2026
- ELSA-2026-96092 Important: curl security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Nov 9, 2026
- SUSE-SU-2026:5069-1 Security update for curl SUSE / openSUSE Security Updates · Nov 3, 2026
- SUSE-SU-2026:5068-1 Security update for curl SUSE / openSUSE Security Updates · Nov 3, 2026
- USN-8927-1 curl vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-8927-2 curl vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- SUSE-SU-2026:4954-1 Security update for curl SUSE / openSUSE Security Updates · Nov 2, 2026
- ALAS2023-2026-3267 Important: curl security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 26, 2026
- RHSA-2026:82895 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 18, 2026
- RHSA-2026:80349 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- openSUSE-SU-2026:12150-1 curl-8.23.0-1.1 on GA media SUSE / openSUSE Security Updates · Oct 17, 2026