Joomla Extension - joomlacontenteditor.net - Remote Code Execution in JCE extension for Joomla < 2.9.99.5
A vulnerability in the JCE editor extension for Joomla allows the creation of new editor profiles for unauthenticated users, ultimately resulting in PHP code upload and execution.
- Published
- Jun 5, 2026
- Updated
- Jul 23, 2026
- EPSS
- 16.2% · 97th percentile▼ 62
- CWE
- CWE-284
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Report tools
Action score
75
This week
Don’t wait for the next maintenance window.
- CVSS
- 40 / 40 · 10.0 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 5 / 30 · 16.2%
CISA SSVC decision
- Exploitation
- active
- Automatable
- yes
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · Joomla
- 10.0
- NVD has not scored this yet; the score shown is the CNA’s.
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:A/AU:Y/U:Red
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on Jun 16, 2026. That signals real attacks, not theory.
Remediation deadline for government agencies: Jun 19, 2026.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| widgetfactorylimited | jce | cpe:2.3:a:widgetfactorylimited:jce |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- widgetfactorylimited jcebefore 2.9.99.5
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Joomla). Independent of NVD's CPE analysis and usually ahead of it.
joomlacontenteditor.net Joomla Content Editor (JCE) extension for Joomla
- 1.0.0-2.9.99.4affected
Same product
widgetfactorylimited: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-7339JCE Joomla Component 2.5.0 to 2.5.2 allows arbitrary file upload via a .php file extension for an image file to the /com_jce/editor/librarie35Monitor
- CVE-2026-65891Joomla Extension - joomlacontenteditor.net - Creation of hidden files and unintended file overwrite via rename function in Joomla Content Editor (JCE) < 2.9.99.26Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×2
- Nuclei detection template ×1
- Proof-of-concept repository on GitHub ×20
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | webapps | 2026-08-10 |
| Exploit-DB entry | webapps | 2026-08-17 |
| Metasploit module | exploit/multi/http/joomla_com_jce_unauth_file_upload_rceJoomla Content Editor Unauthenticated File Upload RCEexploit | 2026-06-05 |
| Nuclei detection template | Nuclei template CVE-2026-48907 | — |
| Proof-of-concept repository on GitHub | stars:16 | 2026-06-11 |
| Proof-of-concept repository on GitHub | stars:3 | 2026-06-12 |
| Proof-of-concept repository on GitHub | stars:0 | 2026-06-13 |
| Proof-of-concept repository on GitHub | stars:0 | 2026-06-17 |
| Proof-of-concept repository on GitHub | stars:0 | 2026-06-17 |
| Proof-of-concept repository on GitHub | stars:1 | 2026-06-18 |
| Proof-of-concept repository on GitHub | stars:1 | 2026-06-22 |
| Proof-of-concept repository on GitHub | stars:3 | 2026-06-22 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Metasploitsame day
- Published
- First PoC+6 d
- CISA KEV+11 d
- TodaySep 29, 2026+117 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
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:A/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:Y/R:X/V:X/RE:X/U:Red
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.joomlacontenteditor.net/
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48907
- www.joomlacontenteditor.net/news/jce-security-update-and-a-free-patch-for-older-sites
Vendor advisories and official records. Exploit/PoC links are deliberately left out.