Search for vulnerabilities
Vulnerability details: VCID-13vu-q5g8-43e3
Vulnerability ID VCID-13vu-q5g8-43e3
Aliases CVE-2021-41799
Summary mediawiki: ApiQueryBacklinks can cause a full table scan and as a result DoS
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-400 Uncontrolled Resource Consumption
CWE-770 Allocation of Resources Without Limits or Throttling
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-41799.json
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
epss 0.0023 https://api.first.org/data/v1/epss?cve=CVE-2021-41799
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-41799
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-41799
archlinux Medium https://security.archlinux.org/AVG-2434
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-41799.json
https://api.first.org/data/v1/epss?cve=CVE-2021-41799
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35197
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41798
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41799
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41800
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41801
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJDYJQWT43GBD6GNQ4OW7JOZ6WQ6DZTN/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDBPECBWN6LWNSWIQMVXK6PP4YFEUYHA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/
https://lists.wikimedia.org/hyperkitty/list/wikitech-l%40lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/
https://phabricator.wikimedia.org/T290394
https://security.gentoo.org/glsa/202305-24
2009511 https://bugzilla.redhat.com/show_bug.cgi?id=2009511
AVG-2434 https://security.archlinux.org/AVG-2434
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
CVE-2021-41799 https://nvd.nist.gov/vuln/detail/CVE-2021-41799
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-41799.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

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-2021-41799
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://nvd.nist.gov/vuln/detail/CVE-2021-41799
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 0.45795
EPSS Score 0.0023
Published At Sept. 21, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:13:59.197056+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-41799.json 37.0.0