OESA-2026-1732

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1732
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-1732.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-1732
Upstream
Published
2026-03-27T11:10:45Z
Modified
2026-08-18T01:19:43.052700161Z
Severity
  • 1.7 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
pyOpenSSL security update
Details

pyOpenSSL is a rather thin wrapper around (a subset of) the OpenSSL library. With thin wrapper we mean that a lot of the object methods do nothing more than calling a corresponding function in the OpenSSL library.

Security Fix(es):

A security vulnerability exists in the PyOpenSSL library's set_tlsext_servername_callback function. When a user-provided callback function raises an unhandled exception, the connection would still be accepted. If a user relies on this callback for any security-sensitive behavior (such as server name-based access control or certificate validation), this vulnerability could allow the security mechanism to be bypassed, potentially permitting unauthorized connections or access.(CVE-2026-27448)

Database specific 
{
    "severity": "Low"
}
References

Affected packages

openEuler:20.03-LTS-SP4 / pyOpenSSL

Package

Name
pyOpenSSL
Purl
pkg:rpm/openEuler/pyOpenSSL&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
20.0.1-2.oe2003sp4

Ecosystem specific 

{
    "src": [
        "pyOpenSSL-20.0.1-2.oe2003sp4.src.rpm"
    ],
    "noarch": [
        "pyOpenSSL-help-20.0.1-2.oe2003sp4.noarch.rpm",
        "python2-pyOpenSSL-20.0.1-2.oe2003sp4.noarch.rpm",
        "python3-pyOpenSSL-20.0.1-2.oe2003sp4.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1732.json"