CVE-2026-80230 - Vulnerability Details

Description

When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable
standard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and
`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on
connections established without a presented server certificate. Bypassing the
pinning check under these disabled-verification conditions allows
unauthenticated connections to succeed when they should be rejected.

Published: 2026-09-06

Score: n/a

EPSS: n/a

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

curl

unaffected

Version	Status	Constraints
`8.21.0`	affected	≤ 8.21.0
`8.20.0`	affected	≤ 8.20.0
`8.19.0`	affected	≤ 8.19.0
`8.18.0`	affected	≤ 8.18.0
`8.17.0`	affected	≤ 8.17.0
`8.16.0`	affected	≤ 8.16.0
`8.15.0`	affected	≤ 8.15.0
`8.14.1`	affected	≤ 8.14.1
`8.14.0`	affected	≤ 8.14.0
`8.13.0`	affected	≤ 8.13.0
`8.12.1`	affected	≤ 8.12.1
`8.12.0`	affected	≤ 8.12.0
`8.11.1`	affected	≤ 8.11.1
`8.11.0`	affected	≤ 8.11.0
`8.10.1`	affected	≤ 8.10.1
`8.10.0`	affected	≤ 8.10.0
`8.9.1`	affected	≤ 8.9.1
`8.9.0`	affected	≤ 8.9.0
`8.8.0`	affected	≤ 8.8.0
`8.7.1`	affected	≤ 8.7.1
`8.7.0`	affected	≤ 8.7.0
`8.6.0`	affected	≤ 8.6.0
`8.5.0`	affected	≤ 8.5.0
`8.4.0`	affected	≤ 8.4.0
`8.3.0`	affected	≤ 8.3.0
`8.2.1`	affected	≤ 8.2.1
`8.2.0`	affected	≤ 8.2.0
`8.1.2`	affected	≤ 8.1.2
`8.1.1`	affected	≤ 8.1.1
`8.1.0`	affected	≤ 8.1.0
`8.0.1`	affected	≤ 8.0.1
`8.0.0`	affected	≤ 8.0.0
`7.88.1`	affected	≤ 7.88.1
`7.88.0`	affected	≤ 7.88.0
`7.87.0`	affected	≤ 7.87.0
`7.86.0`	affected	≤ 7.86.0
`7.85.0`	affected	≤ 7.85.0
`7.84.0`	affected	≤ 7.84.0
`7.83.1`	affected	≤ 7.83.1
`7.83.0`	affected	≤ 7.83.0
`7.82.0`	affected	≤ 7.82.0
`7.81.0`	affected	≤ 7.81.0
`7.80.0`	affected	≤ 7.80.0
`7.79.1`	affected	≤ 7.79.1
`7.79.0`	affected	≤ 7.79.0
`7.78.0`	affected	≤ 7.78.0
`7.77.0`	affected	≤ 7.77.0
`7.76.1`	affected	≤ 7.76.1
`7.76.0`	affected	≤ 7.76.0
`7.75.0`	affected	≤ 7.75.0
`7.74.0`	affected	≤ 7.74.0
`7.73.0`	affected	≤ 7.73.0
`7.72.0`	affected	≤ 7.72.0
`7.71.1`	affected	≤ 7.71.1
`7.71.0`	affected	≤ 7.71.0
`7.70.0`	affected	≤ 7.70.0
`7.69.1`	affected	≤ 7.69.1
`7.69.0`	affected	≤ 7.69.0
`7.68.0`	affected	≤ 7.68.0
`7.67.0`	affected	≤ 7.67.0
`7.66.0`	affected	≤ 7.66.0
`7.65.3`	affected	≤ 7.65.3
`7.65.2`	affected	≤ 7.65.2
`7.65.1`	affected	≤ 7.65.1
`7.65.0`	affected	≤ 7.65.0
`7.64.1`	affected	≤ 7.64.1
`7.64.0`	affected	≤ 7.64.0
`7.63.0`	affected	≤ 7.63.0
`7.62.0`	affected	≤ 7.62.0
`7.61.1`	affected	≤ 7.61.1
`7.61.0`	affected	≤ 7.61.0
`7.60.0`	affected	≤ 7.60.0
`7.59.0`	affected	≤ 7.59.0
`7.58.0`	affected	≤ 7.58.0
`7.57.0`	affected	≤ 7.57.0
`7.56.1`	affected	≤ 7.56.1
`7.56.0`	affected	≤ 7.56.0
`7.55.1`	affected	≤ 7.55.1
`7.55.0`	affected	≤ 7.55.0
`7.54.1`	affected	≤ 7.54.1
`7.54.0`	affected	≤ 7.54.0
`7.53.1`	affected	≤ 7.53.1
`7.53.0`	affected	≤ 7.53.0
`7.52.1`	affected	≤ 7.52.1
`7.52.0`	affected	≤ 7.52.0
`7.51.0`	affected	≤ 7.51.0
`7.50.3`	affected	≤ 7.50.3
`7.50.2`	affected	≤ 7.50.2
`7.50.1`	affected	≤ 7.50.1
`7.50.0`	affected	≤ 7.50.0
`7.49.1`	affected	≤ 7.49.1
`7.49.0`	affected	≤ 7.49.0
`7.48.0`	affected	≤ 7.48.0
`7.47.1`	affected	≤ 7.47.1
`7.47.0`	affected	≤ 7.47.0
`7.46.0`	affected	≤ 7.46.0
`7.45.0`	affected	≤ 7.45.0

No data.

Vendor Product Confidence Versions

Curl

100%

Version	Status	Scheme	Platform
`[8.21.0,8.21.0]`	affected	semver	—
`[8.20.0,8.20.0]`	affected	semver	—
`[8.19.0,8.19.0]`	affected	semver	—
`[8.18.0,8.18.0]`	affected	semver	—
`[8.17.0,8.17.0]`	affected	semver	—
`[8.16.0,8.16.0]`	affected	semver	—
`[8.15.0,8.15.0]`	affected	semver	—
`[8.14.1,8.14.1]`	affected	semver	—
`[8.14.0,8.14.0]`	affected	semver	—
`[8.13.0,8.13.0]`	affected	semver	—
`[8.12.1,8.12.1]`	affected	semver	—
`[8.12.0,8.12.0]`	affected	semver	—
`[8.11.1,8.11.1]`	affected	semver	—
`[8.11.0,8.11.0]`	affected	semver	—
`[8.10.1,8.10.1]`	affected	semver	—
`[8.10.0,8.10.0]`	affected	semver	—
`[8.9.1,8.9.1]`	affected	semver	—
`[8.9.0,8.9.0]`	affected	semver	—
`[8.8.0,8.8.0]`	affected	semver	—
`[8.7.1,8.7.1]`	affected	semver	—
`[8.7.0,8.7.0]`	affected	semver	—
`[8.6.0,8.6.0]`	affected	semver	—
`[8.5.0,8.5.0]`	affected	semver	—
`[8.4.0,8.4.0]`	affected	semver	—
`[8.3.0,8.3.0]`	affected	semver	—
`[8.2.1,8.2.1]`	affected	semver	—
`[8.2.0,8.2.0]`	affected	semver	—
`[8.1.2,8.1.2]`	affected	semver	—
`[8.1.1,8.1.1]`	affected	semver	—
`[8.1.0,8.1.0]`	affected	semver	—
`[8.0.1,8.0.1]`	affected	semver	—
`[8.0.0,8.0.0]`	affected	semver	—
`[7.88.1,7.88.1]`	affected	semver	—
`[7.88.0,7.88.0]`	affected	semver	—
`[7.87.0,7.87.0]`	affected	semver	—
`[7.86.0,7.86.0]`	affected	semver	—
`[7.85.0,7.85.0]`	affected	semver	—
`[7.84.0,7.84.0]`	affected	semver	—
`[7.83.1,7.83.1]`	affected	semver	—
`[7.83.0,7.83.0]`	affected	semver	—
`[7.82.0,7.82.0]`	affected	semver	—
`[7.81.0,7.81.0]`	affected	semver	—
`[7.80.0,7.80.0]`	affected	semver	—
`[7.79.1,7.79.1]`	affected	semver	—
`[7.79.0,7.79.0]`	affected	semver	—
`[7.78.0,7.78.0]`	affected	semver	—
`[7.77.0,7.77.0]`	affected	semver	—
`[7.76.1,7.76.1]`	affected	semver	—
`[7.76.0,7.76.0]`	affected	semver	—
`[7.75.0,7.75.0]`	affected	semver	—
`[7.74.0,7.74.0]`	affected	semver	—
`[7.73.0,7.73.0]`	affected	semver	—
`[7.72.0,7.72.0]`	affected	semver	—
`[7.71.1,7.71.1]`	affected	semver	—
`[7.71.0,7.71.0]`	affected	semver	—
`[7.70.0,7.70.0]`	affected	semver	—
`[7.69.1,7.69.1]`	affected	semver	—
`[7.69.0,7.69.0]`	affected	semver	—
`[7.68.0,7.68.0]`	affected	semver	—
`[7.67.0,7.67.0]`	affected	semver	—
`[7.66.0,7.66.0]`	affected	semver	—
`[7.65.3,7.65.3]`	affected	semver	—
`[7.65.2,7.65.2]`	affected	semver	—
`[7.65.1,7.65.1]`	affected	semver	—
`[7.65.0,7.65.0]`	affected	semver	—
`[7.64.1,7.64.1]`	affected	semver	—
`[7.64.0,7.64.0]`	affected	semver	—
`[7.63.0,7.63.0]`	affected	semver	—
`[7.62.0,7.62.0]`	affected	semver	—
`[7.61.1,7.61.1]`	affected	semver	—
`[7.61.0,7.61.0]`	affected	semver	—
`[7.60.0,7.60.0]`	affected	semver	—
`[7.59.0,7.59.0]`	affected	semver	—
`[7.58.0,7.58.0]`	affected	semver	—
`[7.57.0,7.57.0]`	affected	semver	—
`[7.56.1,7.56.1]`	affected	semver	—
`[7.56.0,7.56.0]`	affected	semver	—
`[7.55.1,7.55.1]`	affected	semver	—
`[7.55.0,7.55.0]`	affected	semver	—
`[7.54.1,7.54.1]`	affected	semver	—
`[7.54.0,7.54.0]`	affected	semver	—
`[7.53.1,7.53.1]`	affected	semver	—
`[7.53.0,7.53.0]`	affected	semver	—
`[7.52.1,7.52.1]`	affected	semver	—
`[7.52.0,7.52.0]`	affected	semver	—
`[7.51.0,7.51.0]`	affected	semver	—
`[7.50.3,7.50.3]`	affected	semver	—
`[7.50.2,7.50.2]`	affected	semver	—
`[7.50.1,7.50.1]`	affected	semver	—
`[7.50.0,7.50.0]`	affected	semver	—
`[7.49.1,7.49.1]`	affected	semver	—
`[7.49.0,7.49.0]`	affected	semver	—
`[7.48.0,7.48.0]`	affected	semver	—
`[7.47.1,7.47.1]`	affected	semver	—
`[7.47.0,7.47.0]`	affected	semver	—
`[7.46.0,7.46.0]`	affected	semver	—
`[7.45.0,7.45.0]`	affected	semver	—

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://curl.se/docs/CVE-2026-80230.html
https://curl.se/docs/CVE-2026-80230.json
https://hackerone.com/reports/3969300

History

Sun, 06 Sep 2026 21:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Curl Curl curl
Vendors & Products		Curl Curl curl

Sun, 06 Sep 2026 19:45:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-295

Sun, 06 Sep 2026 18:00:00 +0000

Type	Values Removed	Values Added
Description		When `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable standard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and `CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on connections established without a presented server certificate. Bypassing the pinning check under these disabled-verification conditions allows unauthenticated connections to succeed when they should be rejected.
Title		OpenSSL pinning bypass
References		https://curl.se/docs/CVE-2026-80230.html https://curl.se/docs/CVE-2026-80230.json https://hackerone.com/reports/3969300

Subscriptions

Curl Curl

MITRE

Status: PUBLISHED

Assigner: curl

Published: 2026-09-06T17:48:16.262Z

Updated: 2026-09-06T17:48:16.262Z

Reserved: 2026-08-26T04:24:25.568Z

Link: CVE-2026-80230

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-06T18:17:22.327

Modified: 2026-09-06T18:17:22.327

Link: CVE-2026-80230

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-06T21:00:05Z

Weaknesses

CWE-295

Tracking

Subscriptions

JSON object

JSON object

JSON object

JSON object

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