CVE-2019-7743
Joomla! Object Injection Vulnerability
An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for objection injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for objection injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.
- Record
CVE-2019-7743- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-502, CWE-917
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for objection injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.
- Record
CVE-2019-7743- Updated
- 2026-11-02
EUVDEUVD-2022-2615 No score
An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for objection injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.
- Record
EUVD-2022-2615- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5m3w-rvvh-8fx6
Joomla! Object Injection Vulnerability
An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for object injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.
- Record
GHSA-5m3w-rvvh-8fx6- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for objection injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.
- Record
CVE-2019-7743- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-5m3w-rvvh-8fx6
Joomla! Object Injection Vulnerability
An issue was discovered in Joomla! before 3.9.3. The phar:// stream wrapper can be used for object injection attacks because there is no protection mechanism (such as the TYPO3 PHAR stream wrapper) to prevent use of the phar:// handler for non .phar-files.
- Record
GHSA-5m3w-rvvh-8fx6- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
joomla/joomla-cmsPackagist |
2.5.0 up to 3.9.3 | 3.9.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-7743 is a critical vulnerability (CVSS 9.8) in Joomla Joomla\!, published February 12, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.67%, the 85th percentile. Fixed in joomla/joomla-cms 3.9.3.
References
developer.joomla.org/security-centre/770-20190206-core-implement-the-typo3-phar-stream-wrapper
securityfocus.com/bid/107050
nvd.nist.gov/vuln/detail/CVE-2019-7743
github.com/joomla/joomla-cms/issues/23907
web.archive.org/web/20210730211655/https://www.securityfocus.com/bid/107050