CVE-2026-1285

EUVD-2026-5251
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 17%
Affected Products (NVD)
VendorProductVersion
djangoprojectdjango
4.2 ≤
𝑥
< 4.2.28
djangoprojectdjango
5.2 ≤
𝑥
< 5.2.11
djangoprojectdjango
6.0 ≤
𝑥
< 6.0.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
python-django
bookworm
vulnerable
bookworm (security)
vulnerable
bullseye
vulnerable
bullseye (security)
2:2.2.28-1~deb11u12
fixed
forky
3:4.2.28-1
fixed
sid
3:4.2.28-1
fixed
trixie
vulnerable
trixie (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
python-django
bionic
Fixed 1:1.11.11-1ubuntu1.21+esm14
released
focal
Fixed 2:2.2.12-1ubuntu0.29+esm7
released
jammy
Fixed 2:3.2.12-2ubuntu1.25
released
noble
Fixed 3:4.2.11-1ubuntu1.14
released
questing
Fixed 3:5.2.4-1ubuntu2.3
released
trusty
not-affected
xenial
Fixed 1.8.7-1ubuntu5.15+esm11
released