CVE catalog

CVE-2026-48587

Severity: Medium · CVSS 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: Jun 3, 2026, 1:16:47 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.37% · Oct 27, 2026

An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. `django.utils.cache.has_vary_header()` in Django does not strip leading or trailing whitespace from `Vary` response header values before comparison, which allows remote attackers to read cached responses via requests to URLs whose responses contain whitespace-padded Vary header values. 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 Navid Rezazadeh for reporting this issue.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	python-django	sid	`3:5.2.18-2`	fixed
Debian	python-django	forky	`3:5.2.17-2`	fixed
Debian	python-django	trixie	`3:4.2.28-0+deb13u2`	vulnerable
Debian	python-django	trixie-security	`3:4.2.28-0+deb13u1`	vulnerable
Debian	python-django	bookworm	`3:3.2.25-0+deb12u3`	vulnerable
Debian	python-django	bookworm-security	`3:3.2.25-0+deb12u6`	fixed
Cpe	python-django	Not reported	Not reported	vulnerable
Cpe	django	Not reported	`5.2.15`	fixed
Cpe	django	Not reported	`6.0.6`	fixed
PyPI	django	Not reported	`6.0.6`	fixed
PyPI	django	Not reported	`6.0.6`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	python-django	source	sid	`3:5.2.15-1`	not yet assigned	Not reported	[1138775]
Debian	python-django	source	forky	`3:5.2.15-1`	not yet assigned	Not reported	[1138775]
Debian	python-django	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1138775]
Debian	python-django	source	bookworm	`3:3.2.25-0+deb12u5`	not yet assigned	Not reported	[1138775]
Cpe	django	cpe	Not reported	`5.2.15`	Not reported	Not reported	Not reported
Cpe	django	cpe	Not reported	`6.0.6`	Not reported	Not reported	Not reported
PyPI	django	PyPI	Not reported	`6.0.6`	Not reported	GHSA-923M-GV2P-W5QP	Not reported
PyPI	django	PyPI	Not reported	`6.0.6`	Not reported	Not reported	Not reported

[Debian bug #1138775]

Notes

[trixie] python-django: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[python3-django]Affected
Source package: [python-django]
Details (6)
- 3:3.2.25-0+deb12u3 · all · bookworm
  Affected · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:3.2.25-0+deb12u3 · all · bookworm
  Affected · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:4.2.21-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:4.2.21-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:3.2.25-0+deb12u4 · all · bookworm-security
  Affected · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:3.2.25-0+deb12u4 · all · bookworm-security
  Affected · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
[python-django-doc]Affected
Source package: [python-django]
Details (6)
- 3:3.2.25-0+deb12u3 · all · bookworm
  Affected · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:3.2.25-0+deb12u3 · all · bookworm
  Affected · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:4.2.21-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:4.2.21-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:3.2.25-0+deb12u4 · all · bookworm-security
  Affected · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- 3:3.2.25-0+deb12u4 · all · bookworm-security
  Affected · Fixed: 3:3.2.25-0+deb12u5
  nvd · python-django · debian · bookworm; nvd · python-django · debian · 12

[Debian 13 (Trixie)]

[python3-django]Affected
Source package: [python-django]
Details (6)
- 3:4.2.28-0+deb13u2 · all · trixie
  Affected
  nvd · python-django · debian · 13
- 3:4.2.28-0+deb13u2 · all · trixie
  Affected
  nvd · python-django · debian · 13
- 3:5.2.16-1~bpo13+1 · all · trixie-backports
  Affected
  nvd · python-django · debian · 13
- 3:5.2.16-1~bpo13+1 · all · trixie-backports
  Affected
  nvd · python-django · debian · 13
- 3:4.2.28-0+deb13u1 · all · trixie-security
  Affected
  nvd · python-django · debian · 13
- 3:4.2.28-0+deb13u1 · all · trixie-security
  Affected
  nvd · python-django · debian · 13
[python-django-doc]Affected
Source package: [python-django]
Details (6)
- 3:4.2.28-0+deb13u2 · all · trixie
  Affected
  nvd · python-django · debian · 13
- 3:4.2.28-0+deb13u2 · all · trixie
  Affected
  nvd · python-django · debian · 13
- 3:5.2.16-1~bpo13+1 · all · trixie-backports
  Affected
  nvd · python-django · debian · 13
- 3:5.2.16-1~bpo13+1 · all · trixie-backports
  Affected
  nvd · python-django · debian · 13
- 3:4.2.28-0+deb13u1 · all · trixie-security
  Affected
  nvd · python-django · debian · 13
- 3:4.2.28-0+deb13u1 · all · trixie-security
  Affected
  nvd · python-django · debian · 13

Observed: Oct 27, 2026, 7:17:37 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]