CVE-2026-74253
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0 - Regular Labs Sourcerer before 16.0.0 processes {source} blocks found in Joomla’s final rendered HTML without reliably determining where that code originated.
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
CVE List Score used
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0 - Regular Labs Sourcerer before 16.0.0 processes {source} blocks found in Joomla’s final rendered HTML without reliably determining where that code originated.
- Record
CVE-2026-74253- CVSS 4.0
- 10.0 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-94
- Updated
- 2026-11-02
EUVDEUVD-2026-60307
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0 - Regular Labs Sourcerer before 16.0.0 processes {source} blocks found in Joomla’s final rendered HTML without reliably determining where that code originated.
- Record
EUVD-2026-60307- CVSS 4.0
- 10.0 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-23wq-9cpv-vp32
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input...
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 14.0.0 - Regular Labs Sourcerer before 14.0.0 processes {source} blocks found in Joomla’s final rendered HTML without reliably determining where that code originated.
- Record
GHSA-23wq-9cpv-vp32- CVSS 4.0
- 10.0 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-94
- Updated
- 2026-11-02
NVD
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0 - Regular Labs Sourcerer before 16.0.0 processes {source} blocks found in Joomla’s final rendered HTML without reliably determining where that code originated.
- Record
CVE-2026-74253- CVSS 4.0
- 10.0 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-94
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-74253 is a critical vulnerability (CVSS 10.0) in Regularlabs.com Sourcerer Extension For Joomla, published August 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. No source names a fixed version.