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Vulnerability details: VCID-8mc9-ye3u-c3aj
Vulnerability ID VCID-8mc9-ye3u-c3aj
Aliases CVE-2019-19849
GHSA-rcgc-4xfc-564v
Summary TYPO3 Insecure Deserialization in Query Generator & Query View An issue was discovered in TYPO3 before 8.7.30, 9.x before 9.5.12, and 10.x before 10.2.2. It has been discovered that the classes QueryGenerator and QueryView are vulnerable to insecure deserialization. One exploitable scenario requires having the system extension ext:lowlevel (Backend Module: DB Check) installed, with a valid backend user who has administrator privileges. The other exploitable scenario requires having the system extension ext:sys_action installed, with a valid backend user who has limited privileges.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-502 Deserialization of Untrusted Data
System Score Found at
epss 0.00786 https://api.first.org/data/v1/epss?cve=CVE-2019-19849
cvssv3.1 8.8 https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2019-19849.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2019-19849.yaml
cvssv3.1 8.8 https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2019-19849.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2019-19849.yaml
cvssv2 6.5 https://nvd.nist.gov/vuln/detail/CVE-2019-19849
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2019-19849
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2019-19849
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2019-19849
cvssv3.1 8.8 https://review.typo3.org/q/%2522Resolves:+%252389005%2522+topic:security
generic_textual HIGH https://review.typo3.org/q/%2522Resolves:+%252389005%2522+topic:security
cvssv3.1 8.8 https://typo3.org/security/advisory/typo3-core-sa-2019-026
generic_textual HIGH https://typo3.org/security/advisory/typo3-core-sa-2019-026
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-19849
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2019-19849.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2019-19849.yaml
https://nvd.nist.gov/vuln/detail/CVE-2019-19849
https://review.typo3.org/q/%2522Resolves:+%252389005%2522+topic:security
https://typo3.org/security/advisory/typo3-core-sa-2019-026
https://typo3.org/security/advisory/typo3-core-sa-2019-026/
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2019-19849.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: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2019-19849.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:S/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-19849
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-19849
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:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-19849
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://review.typo3.org/q/%2522Resolves:+%252389005%2522+topic: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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://typo3.org/security/advisory/typo3-core-sa-2019-026
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 0.72806
EPSS Score 0.00786
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:28:50.822294+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-rcgc-4xfc-564v/GHSA-rcgc-4xfc-564v.json 36.1.3