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Vulnerability details: VCID-nda7-9219-6kce
Vulnerability ID VCID-nda7-9219-6kce
Aliases CVE-2026-25673
GHSA-8p8v-wh79-9r56
Summary Django vulnerable to Uncontrolled Resource Consumption An issue was discovered in 6.0 before 6.0.3, 5.2 before 5.2.12, and 4.2 before 4.2.29. `URLField.to_python()` in Django calls `urllib.parse.urlsplit()`, which performs NFKC normalization on Windows that is disproportionately slow for certain Unicode characters, allowing a remote attacker to cause denial of service via large URL inputs containing these characters. 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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-400 Uncontrolled Resource Consumption
CWE-770 Allocation of Resources Without Limits or Throttling
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-25673.json
epss 0.00211 https://api.first.org/data/v1/epss?cve=CVE-2026-25673
epss 0.00229 https://api.first.org/data/v1/epss?cve=CVE-2026-25673
epss 0.00229 https://api.first.org/data/v1/epss?cve=CVE-2026-25673
epss 0.00229 https://api.first.org/data/v1/epss?cve=CVE-2026-25673
epss 0.00229 https://api.first.org/data/v1/epss?cve=CVE-2026-25673
epss 0.00229 https://api.first.org/data/v1/epss?cve=CVE-2026-25673
epss 0.00229 https://api.first.org/data/v1/epss?cve=CVE-2026-25673
epss 0.00229 https://api.first.org/data/v1/epss?cve=CVE-2026-25673
cvssv3.1 7.5 https://docs.djangoproject.com/en/dev/releases/security
generic_textual HIGH https://docs.djangoproject.com/en/dev/releases/security
cvssv3.1 7.5 https://docs.djangoproject.com/en/dev/releases/security/
ssvc Track https://docs.djangoproject.com/en/dev/releases/security/
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-8p8v-wh79-9r56
cvssv3.1 7.5 https://github.com/django/django
generic_textual HIGH https://github.com/django/django
cvssv3.1 7.5 https://groups.google.com/g/django-announce
generic_textual HIGH https://groups.google.com/g/django-announce
ssvc Track https://groups.google.com/g/django-announce
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2026-25673
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-25673
cvssv3.1 7.5 https://www.djangoproject.com/weblog/2026/mar/03/security-releases
generic_textual HIGH https://www.djangoproject.com/weblog/2026/mar/03/security-releases
cvssv3.1 7.5 https://www.djangoproject.com/weblog/2026/mar/03/security-releases/
ssvc Track https://www.djangoproject.com/weblog/2026/mar/03/security-releases/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-25673.json
https://api.first.org/data/v1/epss?cve=CVE-2026-25673
https://docs.djangoproject.com/en/dev/releases/security
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/django/django
https://groups.google.com/g/django-announce
https://nvd.nist.gov/vuln/detail/CVE-2026-25673
https://www.djangoproject.com/weblog/2026/mar/03/security-releases
2444115 https://bugzilla.redhat.com/show_bug.cgi?id=2444115
GHSA-8p8v-wh79-9r56 https://github.com/advisories/GHSA-8p8v-wh79-9r56
security-releases https://www.djangoproject.com/weblog/2026/mar/03/security-releases/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-25673.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

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none

required

unchanged

changed

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none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://docs.djangoproject.com/en/dev/releases/security
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

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required

unchanged

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://docs.djangoproject.com/en/dev/releases/security/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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required

unchanged

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-03T15:25:53Z/ Found at https://docs.djangoproject.com/en/dev/releases/security/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

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none

required

unchanged

changed

high

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none

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low

none

high

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none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/django/django
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

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low

none

high

low

none

high

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none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://groups.google.com/g/django-announce
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

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none

required

unchanged

changed

high

low

none

high

low

none

high

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none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-03T15:25:53Z/ Found at https://groups.google.com/g/django-announce
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2026-25673
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.djangoproject.com/weblog/2026/mar/03/security-releases
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.djangoproject.com/weblog/2026/mar/03/security-releases/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-03T15:25:53Z/ Found at https://www.djangoproject.com/weblog/2026/mar/03/security-releases/
Exploit Prediction Scoring System (EPSS)
Percentile 0.43562
EPSS Score 0.00211
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:53:40.443514+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-8p8v-wh79-9r56/GHSA-8p8v-wh79-9r56.json 38.0.0