CVE-2023-27536 - CVE House
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Status published Unknown CVE-2023-27536

An authentication bypass vulnerability exists libcurl <8.0.0 in the connection...

Vulnerability Description

An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

https://github.com/curl/curl
Vulnerable Versions:
Fixed in 8.0.0

Timeline

Official Publish: March 30th, 2023
Last Modified: February 14th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

CWE-305

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.