An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28.
django.utils.text.Truncator.chars() and Truncator.words() methods (with html=True) and the truncatechars_html and truncatewords_html template filters allow a remote attacker to cause a potential denial-of-service via crafted inputs containing a large number of unmatched HTML end tags.
Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.
Django would like to thank Seokchan Yoon for reporting this issue.
CVE-2026-1285
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 77% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 58.6%
- KEV
- Not listed
Published
February 3, 2026
Last Modified
February 4, 2026
References (3)
- 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92https://docs.djangoproject.com/en/dev/releases/security/
- 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92https://groups.google.com/g/django-announce
- 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92https://www.djangoproject.com/weblog/2026/feb/03/security-releases/
Vendor Advisories for CVE-2026-1285(8)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:14835Red Hat Product SecurityHigh
Red Hat Security Advisory: Satellite 6.18.5 Async Update
- RHSA-2026:6291Red Hat Product SecurityHigh
Red Hat Security Advisory: General availability of the satellite/iop-advisor-backend-rhel9 container image
- RHSA-2026:5971Red Hat Product SecurityHigh
Red Hat Security Advisory: Satellite 6.16.7 Async Update
- RHSA-2026:5970Red Hat Product SecurityHigh
Red Hat Security Advisory: Satellite 6.17.7 Async Update
- RHSA-2026:3959Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update
- RHSA-2026:3958Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update
- RHSA-2026:2694Red Hat Product SecurityHigh
Red Hat Security Advisory: A Subscription Management tool for finding and reporting Red Hat product usage
- GHSA-4rrr-2h4v-f3j9GitHub Security AdvisoriesLow
Django has Inefficient Algorithmic Complexity
Patch Availability(7)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python-django-doc (1.6.11-0ubuntu1.3+esm10) @ trusty | 2026-06-07 | ubuntu |
| redhat | python3.12-django-0:4.2.30-1.el9pc | 2026-05-07 | redhat |
| redhat | satellite/iop-advisor-backend-rhel9:1773451075 | 2026-03-31 | redhat |
| redhat | yggdrasil-worker-forwarder-0:0.0.3-4.el9sat | 2026-03-26 | redhat |
| redhat | python-django-0:4.2.28-0.1.el9pc | 2026-03-26 | redhat |
| redhat | python3.12-django-0:4.2.28-1.el9ap | 2026-03-06 | redhat |
| redhat | discovery/discovery-server-rhel9:1770913597 | 2026-02-12 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| django | 4.2 ... 6.0.1 (41 versions) | 6.0.2 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 8× in last 7d / 36× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 02:00 UTCEPSS rescore
- 2026-07-13 22:30 UTCEPSS rescore
- 2026-07-13 09:37 UTCOSV refresh
- 2026-07-13 06:12 UTCEPSS rescore
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-08 15:15 UTCEPSS rescore
- 2026-07-08 15:15 UTCEPSS rescore
- 2026-07-07 13:46 UTCEPSS rescore
- 2026-07-06 16:27 UTCEPSS rescore
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-04 06:31 UTCEPSS rescore
- 2026-07-01 15:06 UTCEPSS rescore
- 2026-07-01 15:06 UTCEPSS rescore
- 2026-06-28 14:07 UTCEPSS rescore
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-27 03:08 UTCEPSS rescore
- 2026-06-25 13:49 UTCEPSS rescore
- 2026-06-25 01:01 UTCOSV refresh
- 2026-06-24 14:05 UTCEPSS rescore
Show 48 moreShow fewer
- 2026-06-23 21:32 UTCEPSS rescore
- 2026-06-22 14:25 UTCEPSS rescore
- 2026-06-22 14:25 UTCEPSS rescore
- 2026-06-21 14:56 UTCEPSS rescore
- 2026-06-21 14:56 UTCEPSS rescore
- 2026-06-21 01:59 UTCEPSS rescore
- 2026-06-21 01:59 UTCEPSS rescore
- 2026-06-19 19:25 UTCEPSS rescore
- 2026-06-18 17:52 UTCEPSS rescore
- 2026-06-17 17:53 UTCEPSS rescore
- 2026-06-16 17:52 UTCEPSS rescore
- 2026-06-15 17:48 UTCEPSS rescore
- 2026-06-14 23:18 UTCEPSS rescore
- 2026-06-13 23:00 UTCEPSS rescore
- 2026-06-13 23:00 UTCEPSS rescore
- 2026-06-12 23:12 UTCEPSS rescore
- 2026-06-11 14:00 UTCEPSS rescore
- 2026-06-10 22:18 UTCEPSS rescore
- 2026-06-10 13:22 UTCEPSS rescore
- 2026-06-08 14:17 UTCEPSS rescore
- 2026-06-08 14:17 UTCEPSS rescore
- 2026-06-07 22:30 UTCEG score recompute
- 2026-06-07 22:30 UTCVendor advisory
- 2026-06-07 15:25 UTCEPSS rescore
- 2026-06-07 15:24 UTCEPSS rescore
- 2026-06-06 13:47 UTCEPSS rescore
- 2026-06-06 13:47 UTCEPSS rescore
- 2026-06-06 13:47 UTCEPSS rescore
- 2026-06-05 22:47 UTCEPSS rescore
- 2026-06-05 06:10 UTCEPSS rescore
- 2026-06-05 06:10 UTCEPSS rescore
- 2026-06-04 13:12 UTCEPSS rescore
- 2026-06-04 13:12 UTCEPSS rescore
- 2026-06-04 13:12 UTCEPSS rescore
- 2026-06-02 20:13 UTCEPSS rescore
- 2026-06-02 20:13 UTCEPSS rescore
- 2026-06-01 13:51 UTCEPSS rescore
- 2026-06-01 13:51 UTCEPSS rescore
- 2026-06-01 13:51 UTCEPSS rescore
- 2026-05-31 22:30 UTCEPSS rescore
- 2026-05-31 22:30 UTCEPSS rescore
- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-29 14:49 UTCEG score recompute
- 2026-05-29 14:49 UTCVendor advisory
- 2026-05-29 13:44 UTCEPSS rescore
- 2026-05-29 13:44 UTCEPSS rescore
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat
Frequently asked(5)
What is CVE-2026-1285?
When was CVE-2026-1285 disclosed?
Is CVE-2026-1285 actively exploited?
What is the CVSS score of CVE-2026-1285?
How do I remediate CVE-2026-1285?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-1285
Is Your Infrastructure Affected by CVE-2026-1285?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.