CVE-2026-48907
Exploitation confirmed. First attested on 2026-06-16 by CISA-ADP, CISA KEV, GCVE · enisa-cnw-kev, GCVE · kevintel.
- Published2026-06-05
- Fixed in2.9.99.5
- WeaknessCWE-284
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTC- 2026-06-0508:16CVE publishedNVD
- 2026-06-16Listed as exploited by GCVEGCVE
- 2026-06-16Exploitation first reportedCISA KEV
- 2026-06-16Added to the CISA KEV catalogCISA KEV
- 2026-06-1619:54SSVC exploitation set to activeCISA-ADP
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-48907?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-48907?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.9 | < 2.9.99.5 | 2.9.99.5 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Widgetfactorylimited jce to 2.9.99.5
- CISA’s required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.due 2026-06-19
Advisories and patches
- www.joomlacontenteditor.netRelease Notes · Vendor Advisory
Detection
read 2026-10-23 19:25 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 20 repositories, unverifiedywh-jfellus/CVE-2026-489070xBlackash/CVE-2026-4890787achrafg-stack/CVE-2026-48907HORKimhab/CVE-2026-48907wearehackers160/CVE-2026-48907 PoC-in-GitHub
CISA Known Exploited Vulnerability
- Date Added
- 2026-06-16
- Patch Due Date
- 2026-06-19
- Ransomware Use
- Unknown
- Required Action
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Sources
- CISA KEVKEV entry2026-06-16
- GCVEexploitation2026-06-16
- CISA-ADPSSVC decisionactive2026-06-16
- OpenCVESSVC decisionactive—
- CNACVSS 4.010read 2026-10-23
- NVDCVSS 3.19.8read 2026-10-23
- CNAweakness (CWE)CWE-284read 2026-10-23
- FIRST EPSSEPSS score16.2 %read 2026-10-23
- PoC-in-GitHubproof of concept20read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 4.0 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
- Published
- 2026-06-05
- Last Modified
- 2026-07-23
- NVD status
- Analyzed
Frequently asked questions
What is CVE-2026-48907?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.