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Vulnerability details: VCID-z1hp-6qm3-aaac
Vulnerability ID VCID-z1hp-6qm3-aaac
Aliases CVE-2009-3695
GHSA-p6m5-h7pp-v2x5
PYSEC-2009-4
Summary Algorithmic complexity vulnerability in the forms library in Django 1.0 before 1.0.4 and 1.1 before 1.1.1 allows remote attackers to cause a denial of service (CPU consumption) via a crafted (1) EmailField (email address) or (2) URLField (URL) that triggers a large amount of backtracking in a regular expression.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (5)
CWE-400 Uncontrolled Resource Consumption
CWE-407 Inefficient Algorithmic Complexity
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1333 Inefficient Regular Expression Complexity
System Score Found at
cvssv3.1 7.5 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457
generic_textual HIGH http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457
cvssv3.1 7.5 http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51
generic_textual HIGH http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51
epss 0.00981 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01012 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.01098 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06084 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06767 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06767 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06767 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
epss 0.06767 https://api.first.org/data/v1/epss?cve=CVE-2009-3695
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=528246
cvssv3.1 7.5 https://exchange.xforce.ibmcloud.com/vulnerabilities/53727
generic_textual HIGH https://exchange.xforce.ibmcloud.com/vulnerabilities/53727
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-p6m5-h7pp-v2x5
cvssv3.1 3.7 https://github.com/django/django
generic_textual MODERATE https://github.com/django/django
cvssv3.1 7.5 https://github.com/django/django/commit/594a28a9044120bed58671dde8a805c9e0f6c79a
generic_textual HIGH https://github.com/django/django/commit/594a28a9044120bed58671dde8a805c9e0f6c79a
cvssv3.1 7.5 https://github.com/django/django/commit/e3e992e18b368fcd56aabafc1b5bf80a6e11b495
generic_textual HIGH https://github.com/django/django/commit/e3e992e18b368fcd56aabafc1b5bf80a6e11b495
cvssv3.1 7.5 https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2009-4.yaml
generic_textual HIGH https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2009-4.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2009-3695
cvssv3.1 7.5 https://web.archive.org/web/20091013093057/http://secunia.com/advisories/36968
generic_textual HIGH https://web.archive.org/web/20091013093057/http://secunia.com/advisories/36968
cvssv3.1 7.5 https://web.archive.org/web/20091017070244/http://secunia.com/advisories/36948
generic_textual HIGH https://web.archive.org/web/20091017070244/http://secunia.com/advisories/36948
cvssv3.1 7.5 https://web.archive.org/web/20200228171918/http://www.securityfocus.com/bid/36655
generic_textual HIGH https://web.archive.org/web/20200228171918/http://www.securityfocus.com/bid/36655
cvssv3.1 7.5 http://www.debian.org/security/2009/dsa-1905
generic_textual HIGH http://www.debian.org/security/2009/dsa-1905
cvssv3.1 7.5 http://www.djangoproject.com/weblog/2009/oct/09/security
generic_textual HIGH http://www.djangoproject.com/weblog/2009/oct/09/security
cvssv3.1 7.5 http://www.openwall.com/lists/oss-security/2009/10/13/6
generic_textual HIGH http://www.openwall.com/lists/oss-security/2009/10/13/6
Reference id Reference type URL
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457
http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51
http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51/
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2009-3695.json
https://api.first.org/data/v1/epss?cve=CVE-2009-3695
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3695
http://secunia.com/advisories/36948
http://secunia.com/advisories/36968
https://exchange.xforce.ibmcloud.com/vulnerabilities/53727
https://github.com/django/django
https://github.com/django/django/commit/594a28a9044120bed58671dde8a805c9e0f6c79a
https://github.com/django/django/commit/e3e992e18b368fcd56aabafc1b5bf80a6e11b495
https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2009-4.yaml
https://web.archive.org/web/20091013093057/http://secunia.com/advisories/36968
https://web.archive.org/web/20091017070244/http://secunia.com/advisories/36948
https://web.archive.org/web/20200228171918/http://www.securityfocus.com/bid/36655
http://www.debian.org/security/2009/dsa-1905
http://www.djangoproject.com/weblog/2009/oct/09/security
http://www.djangoproject.com/weblog/2009/oct/09/security/
http://www.openwall.com/lists/oss-security/2009/10/13/6
http://www.securityfocus.com/bid/36655
http://www.vupen.com/english/advisories/2009/2871
528246 https://bugzilla.redhat.com/show_bug.cgi?id=528246
550457 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457
cpe:2.3:a:djangoproject:django:1.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:djangoproject:django:1.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:djangoproject:django:1.1:*:*:*:*:*:*:*
CVE-2009-3695 https://nvd.nist.gov/vuln/detail/CVE-2009-3695
GHSA-p6m5-h7pp-v2x5 https://github.com/advisories/GHSA-p6m5-h7pp-v2x5
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 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457
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 http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51
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://exchange.xforce.ibmcloud.com/vulnerabilities/53727
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:H/PR:N/UI:N/S:U/C:L/I:N/A:N 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

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://github.com/django/django/commit/594a28a9044120bed58671dde8a805c9e0f6c79a
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://github.com/django/django/commit/e3e992e18b368fcd56aabafc1b5bf80a6e11b495
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://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2009-4.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

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2009-3695
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://web.archive.org/web/20091013093057/http://secunia.com/advisories/36968
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://web.archive.org/web/20091017070244/http://secunia.com/advisories/36948
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://web.archive.org/web/20200228171918/http://www.securityfocus.com/bid/36655
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 http://www.debian.org/security/2009/dsa-1905
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 http://www.djangoproject.com/weblog/2009/oct/09/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

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 http://www.openwall.com/lists/oss-security/2009/10/13/6
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
Exploit Prediction Scoring System (EPSS)
Percentile 0.62853
EPSS Score 0.00981
Published At March 29, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.