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Fencer Intel
medium 5.9

CVE-2013-2255 json

OpenStack Keystone and other components vulnerable to Improper Certificate Validation

published 2019-11-01 7 y ago modified 2026-07-13 3 mo ago also GHSA-qh2x-hpf9-cf2g , PYSEC-2026-2413 , PYSEC-2026-2677 , PYSEC-2026-3034 , PYSEC-2026-656 , EUVD-2022-4974

cvss
5.9
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

HTTPSConnections in OpenStack Keystone 2013, OpenStack Compute 2013.1, and possibly other OpenStack components, fail to validate server-side SSL certificates.

Patch / fix

  • pypi python-keystoneclient 0.4.0
  • pypi cinder 7.0.0a0
  • pypi neutron 7.0.0a0
  • pypi keystone 8.0.0a0
  • keystone Debian 14, Debian 13, Debian 12 2014.1-1

debian advisories DEBIAN-CVE-2013-2255

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-2255 updated cvss 4.3

openstack-*: Inconsistent and non-validating HTTPS client

  • Red Hat OpenStack Platform 3 openstack-keystone, python-keystoneclient Red Hat OpenStack Platform 4 openstack-keystone, python-keystoneclient
    affected: no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
GitHub 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
pypi python-keystoneclient
<0.4.0
0.4.0
pypi cinder
<7.0.0a0
7.0.0a0
pypi neutron
<7.0.0a0
7.0.0a0
pypi keystone
<8.0.0a0
8.0.0a0

Affected products

  • OpenStack Keystone
  • OpenStack Compute

Classification

Weakness
  • CWE-295 Improper Certificate Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.