CVE-2026-49049Joomla Extension - joomshaper.com - Unauthenticated access to Helix3 template ajax handler
- 7.5HighCVSS base score
- 0.99%Exploitation in 30 daysEPSS · top 37% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
The Helix3 plugin for Joomla exposes an ajax handler task, that allows unauthenticated attackers to delete arbitrary files, write arbitrary JSON files and update template parameters.
Exploited in the wild (ENISA)
Only ENISA's EU KEV lists it. Across the site, “known exploited” (the KEV badge, the filter, the feeds and exports) means CISA's KEV, so it does not count as one there.
ENISA's EU Vulnerability Database lists it as exploited, from ENISA's EU KEV, since 10 Jul 2026.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Nuclei template for it.
Show the exploits1
Nuclei templates1 template
- JoomShaper Helix3 <=3.1.0 - Unauthenticated Arbitrary JSON File Write (Nuclei template) (opens in a new tab)
http/cves/2026/CVE-2026-49049.yamlSeverity high
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By Joomla
- 33 days later
· 33 days later
Published
- 44 days later
· 44 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.99% · top 37% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
joomshaper.com · Helix3 extension for Joomla
- affected 1.0-3.1.1
References
References1
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-40122 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-49049)Record last updated .