CVE-2019-19849 json
TYPO3 Insecure Deserialization in Query Generator & Query View
published 2019-12-17 6 y ago modified 2026-06-17 4 mo ago also GHSA-rcgc-4xfc-564v , EUVD-2022-5150
- cvss
- 8.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist typo3/cms-core 8.7.30, 9.5.12, 10.2.1
- packagist typo3/cms 8.7.30, 9.5.12, 10.2.1
- typo3 typo3 8.7.30, 9.5.12, 10.2.2
Exploit prediction
1.27% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 8.8 | CVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:N |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
| GitHub | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | typo3/cms-core | >=10.0.0, <10.2.1 >=8.0.0, <8.7.30 >=9.0.0, <9.5.12 |
10.2.1 8.7.30 9.5.12 |
| packagist | typo3/cms | >=10.0.0, <10.2.1 >=8.0.0, <8.7.30 >=9.0.0, <9.5.12 |
10.2.1 8.7.30 9.5.12 |
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
typo3.org
/security/advisory/typo3-core-sa-2019-026/
vendor-advisory
-
review.typo3.org
/q/%2522Resolves:+%252389005%2522+topic:security
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-19849
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2019-19849.yaml
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2019-19849.yaml
web
-
typo3.org
/security/advisory/typo3-core-sa-2019-026
web
Sources
- CVE List CVE-2019-19849
- GitHub Advisory GHSA-rcgc-4xfc-564v
- NVD CVE-2019-19849
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.