TI-2026-55461 Aliases CVE-2026-80229 GHSA-jrp3-jq4v-w9gc

OpenSSL provider use-after-free

MEDIUM 40CWE-416Published 2026-09-06 · Updated 2026-09-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 1 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership reference; destroying the easy handle prematurely frees this context while the active connection retains a dangling pointer, leading to a heap-use-after-free upon subsequent I/O or post-handshake operations.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00563 47th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial curl (curl): 8.14.2, 8.16.1, 8.20.1 +1Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
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	8.14.0 to before 8.14.2; 8.15.0 to before 8.16.1; 8.17.0 to before 8.20.1; 8.21.0 to before 8.22.0	8.14.2, 8.16.1, 8.20.1, 8.22.0	Patch available	CNA
curl	curl	8.21.0; 8.20.0; 8.19.0; 8.18.0; 8.17.0; 8.16.0; 8.15.0; 8.14.1; 8.14.0	—	No fix listed	CNA

curl Vendorcurl Affected 8.14.0 to before 8.14.2; 8.15.0 to before 8.16.1; 8.17.0 to before 8.20.1; 8.21.0 to before 8.22.0 Fixed in 8.14.2, 8.16.1, 8.20.1, 8.22.0 Patch available CNA
curl Vendorcurl Affected 8.21.0; 8.20.0; 8.19.0; 8.18.0; 8.17.0; 8.16.0; 8.15.0; 8.14.1; 8.14.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:haxx:curl::::::::	8.14.0 to before 8.22.0	Vulnerable	Haxx

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* Versions 8.14.0 to before 8.22.0 Vulnerable ·Haxx

Remediation

Fix · CNA curl (curl) Fixed in 8.14.2, 8.16.1, 8.20.1, 8.22.0

Red Hat 1 advisory

RHSA-2026:63161 Released 2026-09-03 · Red Hat rating Moderate
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images curl-8.22.0-0.1.hum1@aarch64, curl-8.22.0-0.1.hum1@src, curl-8.22.0-0.1.hum1@x86_64 +6

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-09-06
curl 8.14.2, 8.16.1 and 2 more versions
9 records Highest priority Priority HIGH 8 HIGH, 1 MEDIUM
Other records, highest priority first
- TI-2026-16162 Negotiate ambient user conn reusePriority HIGH 82
- TI-2026-15472 HTTP/2 server push UAFPriority HIGH 78
- TI-2026-56683 domain-scoped PSL domain cookiePriority HIGH 75
Show all 9 records →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Satellite 6	Affected	No fix yet: Fix deferred
Red Hat Hardened Images	Fixed	RHSA-2026:63161

Not affected: 11 products

Confidential Compute Attestation
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 Enterprise Linux AI (RHEL AI) 3
Red Hat OpenShift Container Platform 4
Red Hat OpenShift Container Platform 5
Red Hat OpenShift Dev Spaces
Red Hat Satellite 6

Timeline

2026-10-02 Threatist record created from CVE-2026-80229
2026-10-03 Alias added: GHSA-jrp3-jq4v-w9gc
2026-10-20 Fix available: RHSA-2026:63161 · Red Hat
2026-10-20 Fix available: Red Hat Hardened Images · Red Hat
2026-10-20 CVSS score added · Red Hat
2026-11-01 Affected versions changed · Red Hat

References

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

See all 103 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences