CVE-2023-36053
No exploitation reported by the sources we read.
- Published2023-07-03
- Fixed in4.2.3 · 4.1.10 · 3.2.20
- WeaknessCWE-1333
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « 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
In Django 3.2 before 3.2.20, 4 before 4.1.10, and 4.2 before 4.2.3, EmailValidator and URLValidator are subject to a potential ReDoS (regular expression denial of service) attack via a very large number of domain name labels of emails and URLs.
Timeline
dates in UTC- 2023-07-0313:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-36053?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-36053?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD · OSV · CISA-ADP| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.2 | ≥ 4.2, < 4.2.3 | 4.2.3 | NVD · OSV |
| 4.2 | ≥ 4.2a1, < 4.2.3 | 4.2.3 | OSV |
| 4.x | ≥ 4.0, < 4.1.10 | 4.1.10 | NVD · OSV |
| 4.x | ≥ 4.0a1, < 4.1.10 | 4.1.10 | OSV |
| 3.2 | ≥ 3.2, < 3.2.20 | 3.2.20 | NVD · OSV |
| 3.2 | ≥ 3.2a1, < 3.2.20 | 3.2.20 | OSV |
| — | all versions | no fix published | CISA-ADP |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 10.0 | = 10.0 | no fix published | NVD · CISA-ADP |
| 11.0 | = 11.0 | no fix published | NVD |
| 12.0 | = 12.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 37.x | = 37 | no fix published | NVD · CISA-ADP |
| 38.x | = 38 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Red Hat Security Advisory: Satellite 6.14 security and bug fix update
Red Hat Security Advisory: Satellite 6.13.5 Async Security Update
Fix
- Update Django to 4.2.3 · 4.1.10 · 3.2.20
- Vendor fix Red Hat Product Security RHSA-2023:6818 · 4 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For detailed instructions how to apply this update, refer to: https://access.redhat.com/documentation/en-us/red_hat_satellite/6.14/html/upgrading_red_hat_satellite_to_6.14/index
- Vendor fix Red Hat Product Security RHSA-2023:5931 · 4 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Advisories and patches
- docs.djangoproject.comRelease Notes
- www.djangoproject.comPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2023-07-03
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-36053?
Is CVE-2023-36053 actively exploited?
What is the CVSS score for CVE-2023-36053?
Running Django? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.