TI-2026-07430 Aliases CVE-2026-8458 GHSA-88c6-6jfq-mm4q

wrong reuse for different services

MEDIUM 62CWE-488Published 2026-07-03 · Updated 2026-09-15

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: Partial Red Hat: 16 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services". libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different services.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00371 31st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial curl (curl): 8.14.2, 8.16.1, 8.20.1Red Hat: 18 advisoriesRed Hat: 16 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
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	7.43.0 to before 8.14.2; 8.15.0 to before 8.16.1; 8.17.0 to before 8.20.1	8.14.2, 8.16.1, 8.20.1	Patch available	CNA
curl	curl	8.20.0; 8.19.0; 8.18.0; 8.17.0; 8.16.0; 8.15.0; 8.14.1; 8.14.0; 8.13.0; 8.12.1; 8.12.0; 8.11.1; 8.11.0; 8.10.1; 8.10.0; 8.9.1; 8.9.0; 8.8.0; 8.7.1; 8.7.0; 8.6.0; 8.5.0; 8.4.0; 8.3.0; 8.2.1; 8.2.0; 8.1.2; 8.1.1; 8.1.0; 8.0.1; 8.0.0; 7.88.1; 7.88.0; 7.87.0; 7.86.0; 7.85.0; 7.84.0; 7.83.1; 7.83.0; 7.82.0; 7.81.0; 7.80.0; 7.79.1; 7.79.0; 7.78.0; 7.77.0; 7.76.1; 7.76.0; 7.75.0; 7.74.0; 7.73.0; 7.72.0; 7.71.1; 7.71.0; 7.70.0; 7.69.1; 7.69.0; 7.68.0; 7.67.0; 7.66.0; 7.65.3; 7.65.2; 7.65.1; 7.65.0; 7.64.1; 7.64.0; 7.63.0; 7.62.0; 7.61.1; 7.61.0; 7.60.0; 7.59.0; 7.58.0; 7.57.0; 7.56.1; 7.56.0; 7.55.1; 7.55.0; 7.54.1; 7.54.0; 7.53.1; 7.53.0; 7.52.1; 7.52.0; 7.51.0; 7.50.3; 7.50.2; 7.50.1; 7.50.0; 7.49.1; 7.49.0; 7.48.0; 7.47.1; 7.47.0; 7.46.0; 7.45.0; 7.44.0; 7.43.0	—	No fix listed	CNA

curl Vendorcurl Affected 7.43.0 to before 8.14.2; 8.15.0 to before 8.16.1; 8.17.0 to before 8.20.1 Fixed in 8.14.2, 8.16.1, 8.20.1 Patch available CNA
curl Vendorcurl Affected 8.20.0; 8.19.0; 8.18.0; 8.17.0; 8.16.0; 8.15.0; 8.14.1; 8.14.0; 8.13.0; 8.12.1; 8.12.0; 8.11.1; 8.11.0; 8.10.1; 8.10.0; 8.9.1; 8.9.0; 8.8.0; 8.7.1; 8.7.0; 8.6.0; 8.5.0; 8.4.0; 8.3.0; 8.2.1; 8.2.0; 8.1.2; 8.1.1; 8.1.0; 8.0.1; 8.0.0; 7.88.1; 7.88.0; 7.87.0; 7.86.0; 7.85.0; 7.84.0; 7.83.1; 7.83.0; 7.82.0; 7.81.0; 7.80.0; 7.79.1; 7.79.0; 7.78.0; 7.77.0; 7.76.1; 7.76.0; 7.75.0; 7.74.0; 7.73.0; 7.72.0; 7.71.1; 7.71.0; 7.70.0; 7.69.1; 7.69.0; 7.68.0; 7.67.0; 7.66.0; 7.65.3; 7.65.2; 7.65.1; 7.65.0; 7.64.1; 7.64.0; 7.63.0; 7.62.0; 7.61.1; 7.61.0; 7.60.0; 7.59.0; 7.58.0; 7.57.0; 7.56.1; 7.56.0; 7.55.1; 7.55.0; 7.54.1; 7.54.0; 7.53.1; 7.53.0; 7.52.1; 7.52.0; 7.51.0; 7.50.3; 7.50.2; 7.50.1; 7.50.0; 7.49.1; 7.49.0; 7.48.0; 7.47.1; 7.47.0; 7.46.0; 7.45.0; 7.44.0; 7.43.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:haxx:curl::::::::	7.46.0 to before 8.20.0	Vulnerable	Haxx

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* Versions 7.46.0 to before 8.20.0 Vulnerable ·Haxx

Remediation

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

Red Hat 18 advisories

RHSA-2026:95346 Released 2026-11-06 · Red Hat rating Critical
OpenShift Container Platform 4.22.22 bug fix and security update
- Red Hat OpenShift Container Platform 4.22 rhcos-aarch64-4.22.9.8.202611032353-0, rhcos-ppc64le-4.22.9.8.202611032353-0, rhcos-s390x-4.22.9.8.202611032353-0 +1
RHSA-2026:93454 Released 2026-11-02 · Red Hat rating Important
curl security update
- Red Hat Enterprise Linux AppStream EUS (v.9.6) libcurl-devel-7.76.1-31.el9_6.4
- Red Hat Enterprise Linux BaseOS EUS (v.9.6) curl-7.76.1-31.el9_6.4, curl-minimal-7.76.1-31.el9_6.4, libcurl-7.76.1-31.el9_6.4 +1
RHSA-2026:92368 Released 2026-10-29 · Red Hat rating Important
curl security, bug fix, and enhancement update
- Red Hat Enterprise Linux BaseOS (v. 8) curl-7.61.1-34.el8_10.18, libcurl-7.61.1-34.el8_10.18, libcurl-devel-7.61.1-34.el8_10.18 +1

Show 15 more Red Hat advisories

RHSA-2026:79357 Released 2026-10-08 · Red Hat rating Important
Red Hat Cost Management On-Premise container image update
- Red Hat Cost Management On-Premise 1 registry.redhat.io/costmanagement/costmanagement-ui-rhel10
RHSA-2026:73516 Released 2026-09-29 · Red Hat rating Important
Red Hat OpenShift Dev Spaces 3.30.2 Release.
- Red Hat OpenShift Dev Spaces 3.30 registry.redhat.io/devspaces/code-rhel9
RHSA-2026:72506 Released 2026-09-28 · Red Hat rating Important
curl security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) libcurl-devel-8.12.1-1.el10_0.10
- Red Hat Enterprise Linux BaseOS EUS (v. 10.0) curl-8.12.1-1.el10_0.10, libcurl-8.12.1-1.el10_0.10, libcurl-minimal-8.12.1-1.el10_0.10
RHSA-2026:72476 Released 2026-09-28 · Red Hat rating Important
cert-manager Operator for Red Hat OpenShift 1.20.1
- Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/cert-manager-operator-rhel9
RHSA-2026:72475 Released 2026-09-28 · Red Hat rating Important
cert-manager Operator for Red Hat OpenShift 1.20.1
- Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9
RHSA-2026:72470 Released 2026-09-28 · Red Hat rating Important
cert-manager Operator for Red Hat OpenShift 1.20.1
- Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/jetstack-cert-manager-acmesolver-rhel9, registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9
RHSA-2026:72399 Released 2026-09-28 · Red Hat rating Important
cert-manager Operator for Red Hat OpenShift 1.20.1
- Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/cert-manager-operator-rhel9
RHSA-2026:72395 Released 2026-09-28 · Red Hat rating Important
cert-manager Operator for Red Hat OpenShift 1.20.1
- Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9
RHSA-2026:72394 Released 2026-09-28 · Red Hat rating Important
cert-manager Operator for Red Hat OpenShift 1.20.1
- Cert Manager support for Red Hat OpenShift release 1.20 registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9
RHSA-2026:71603 Released 2026-09-24 · Red Hat rating Important
Red Hat Update Infrastructure 5.3 security update
- Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-kubernetes-rhel9, registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9 +2
RHSA-2026:69126 Released 2026-09-21 · Red Hat rating Important
curl security update
- Red Hat Enterprise Linux AppStream (v. 9) libcurl-devel-7.76.1-40.el9_8.7
- Red Hat Enterprise Linux BaseOS (v. 9) curl-7.76.1-40.el9_8.7, curl-minimal-7.76.1-40.el9_8.7, libcurl-7.76.1-40.el9_8.7 +1
RHSA-2026:69125 Released 2026-09-21 · Red Hat rating Important
curl security update
- Red Hat Enterprise Linux AppStream (v. 10) libcurl-devel-8.12.1-4.el10_2.6
- Red Hat Enterprise Linux BaseOS (v. 10) curl-8.12.1-4.el10_2.6, libcurl-8.12.1-4.el10_2.6, libcurl-minimal-8.12.1-4.el10_2.6
RHSA-2026:56869 Released 2026-08-19 · Red Hat rating Important
Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP5 security update
- Red Hat JBoss Core Services 2.4.62.SP5
RHSA-2026:34975 Released 2026-07-02 · Red Hat rating Important
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images cargo-1.96.1-1.hum1@aarch64, cargo-1.96.1-1.hum1@x86_64, clippy-1.96.1-1.hum1@aarch64 +36
RHSA-2026:29017 Released 2026-06-24 · Red Hat rating Important
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images curl-8.21.0-0.1.hum1@aarch64, curl-8.21.0-0.1.hum1@src, curl-8.21.0-0.1.hum1@x86_64 +6

Fixed in the same release

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

Release · 2026-07-03
curl 8.14.2, 8.16.1, 8.20.1
13 records Highest priority Priority HIGH 12 HIGH, 1 MEDIUM
Other records, highest priority first
- TI-2026-10231 cross-origin Digest auth state leakPriority HIGH 82
- TI-2026-09063 HTTP/2 stream-dependency tree UAFPriority HIGH 82
- TI-2026-07976 stale proxy password leakPriority HIGH 82
Show all 13 records →

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat OpenShift Container Platform 4	Affected	No fix yet
Cert Manager support for Red Hat OpenShift release 1.20	Fixed	RHSA-2026:72394, RHSA-2026:72395, RHSA-2026:72399, RHSA-2026:72470, RHSA-2026:72475, RHSA-2026:72476
Red Hat Cost Management On-Premise 1	Fixed	RHSA-2026:79357
Red Hat Enterprise Linux AppStream (v. 10)	Fixed	RHSA-2026:69125
Red Hat Enterprise Linux AppStream (v. 9)	Fixed	RHSA-2026:69126
Red Hat Enterprise Linux AppStream EUS (v. 10.0)	Fixed	RHSA-2026:72506
Red Hat Enterprise Linux AppStream EUS (v.9.6)	Fixed	RHSA-2026:93454
Red Hat Enterprise Linux BaseOS (v. 10)	Fixed	RHSA-2026:69125
Red Hat Enterprise Linux BaseOS (v. 8)	Fixed	RHSA-2026:92368
Red Hat Enterprise Linux BaseOS (v. 9)	Fixed	RHSA-2026:69126
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)	Fixed	RHSA-2026:72506
Red Hat Enterprise Linux BaseOS EUS (v.9.6)	Fixed	RHSA-2026:93454
Red Hat Hardened Images	Fixed	RHSA-2026:29017, RHSA-2026:34975
Red Hat JBoss Core Services 2.4.62.SP5	Fixed	RHSA-2026:56869
Red Hat OpenShift Container Platform 4.22	Fixed	RHSA-2026:95346
Red Hat OpenShift Dev Spaces 3.30	Fixed	RHSA-2026:73516
Red Hat Update Infrastructure 5	Fixed	RHSA-2026:71603

Not affected: 6 products

Cert Manager support for Red Hat OpenShift release 1.20
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat OpenShift AI (RHOAI)
Red Hat OpenShift Dev Spaces 3.30
Red Hat Trusted Profile Analyzer

Timeline

2026-10-02 Threatist record created from CVE-2026-8458
2026-10-03 Alias added: GHSA-88c6-6jfq-mm4q
2026-10-09 Fix available: RHSA-2026:56869 · Red Hat
2026-10-09 Fix available: RHSA-2026:79357 · Red Hat
2026-10-09 Fix available: Red Hat Cost Management On-Premise 1, Red Hat JBoss Core Services 2.4.62.SP5 · Red Hat
2026-10-16 Affected versions changed · Red Hat
2026-10-29 Fix available: RHSA-2026:92368 · Red Hat
2026-10-29 Fix available: Red Hat Enterprise Linux BaseOS (v. 8) · Red Hat
2026-11-02 Fix available: RHSA-2026:93454 · Red Hat
2026-11-02 Fix available: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6) · Red Hat
2026-11-06 Affected versions changed · Red Hat
2026-11-07 Fix available: RHSA-2026:95346 · Red Hat
2026-11-07 Fix available: Red Hat OpenShift Container Platform 4.22 · 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