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Vulnerability record · CVE-2020-13254 · published 3 June 2020

CVE-2020-13254: Djangoproject django improper certificate validation vulnerability

Djangoproject · Django

An issue was discovered in Django 2.2 before 2.2.13 and 3.0 before 3.0.7. In cases where a memcached backend does not perform key validation, passing malformed cache keys could result in a key collision, and potential data leakage.

5.9 CVSS 3.1 Medium EPSS 6.1% · top 6.8% CWE-295 · Improper certificate validation
5.9CVSS 3.1 base score, v2 4.3
6.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Django 2.2 before 2.2.13 and 3.0 before 3.0.7. In cases where a memcached backend does not perform key validation, passing malformed cache keys could result in a key collision, and potential data leakage.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.djangoproject.com/en/3.0/releases/security/ Release NotesVendor Advisory
https://groups.google.com/d/msg/django-announce/pPEmb2ot4Fo/X-SMalYSBAAJ Mailing ListRelease NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00016.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4A2AP4T7RKPBCLTI2NNQG3T
https://security.netapp.com/advisory/ntap-20200611-0002/ Third Party Advisory
https://usn.ubuntu.com/4381-1/ Third Party Advisory
https://usn.ubuntu.com/4381-2/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4705 Third Party Advisory
https://www.djangoproject.com/weblog/2020/jun/03/security-releases/ Release NotesVendor Advisory
https://www.oracle.com/security-alerts/cpujan2021.html PatchThird Party Advisory
https://docs.djangoproject.com/en/3.0/releases/security/ Release NotesVendor Advisory
https://groups.google.com/d/msg/django-announce/pPEmb2ot4Fo/X-SMalYSBAAJ Mailing ListRelease NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00016.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4A2AP4T7RKPBCLTI2NNQG3T
https://security.netapp.com/advisory/ntap-20200611-0002/ Third Party Advisory
https://usn.ubuntu.com/4381-1/ Third Party Advisory
https://usn.ubuntu.com/4381-2/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4705 Third Party Advisory
https://www.djangoproject.com/weblog/2020/jun/03/security-releases/ Release NotesVendor Advisory
https://www.oracle.com/security-alerts/cpujan2021.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-13254), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.