Public proof of conceptFix available

CVE-2021-35042

Q: Is CVE-2021-35042 actively exploited?

Active exploitation of CVE-2021-35042 has not been confirmed. Its EPSS score was 44.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-35042?

CVE-2021-35042 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2021-07-02
Fixed in3.2.5 · 3.1.13
WeaknessCWE-89

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Django 3.1.x before 3.1.13 and 3.2.x before 3.2.5 allows QuerySet.order_by SQL injection if order_by is untrusted input from a client of a web application.

Timeline

dates in UTC

2021-07-0210:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-35042?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-35042?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Django

Branch	Affected	Fixed in	Source
3.2	≥ 3.2, < 3.2.5	3.2.5	NVD
3.1	≥ 3.1, < 3.1.13	3.1.13	NVD

Fedoraproject fedora

Branch	Affected	Fixed in	Source
34.x	= 34	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Django to 3.2.5 · 3.1.13

Advisories and patches

docs.djangoproject.comPatch · Vendor Advisory
www.djangoproject.comPatch · Vendor Advisory
www.openwall.comPatch

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 6 repositories, unverifiedYouGina/CVE-2021-35042mrlihd/CVE-2021-35042r4vi/CVE-2021-35042zer0qs/CVE-2021-35042LUUANHDUC/CVE-2021-35042

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
NVDweakness (CWE)CWE-89read 2026-10-23
FIRST EPSSEPSS score44.4 %read 2026-10-23
PoC-in-GitHubproof of concept6read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2021-07-02
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-35042?

Django 3.1.x before 3.1.13 and 3.2.x before 3.2.5 allows QuerySet.order_by SQL injection if order_by is untrusted input from a client of a web application.

Is CVE-2021-35042 actively exploited?

Active exploitation of CVE-2021-35042 has not been confirmed. Its EPSS score was 44.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-35042?

CVE-2021-35042 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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