CVE-2018-11690
The Balbooa Gridbox extension version 2.4.0 and previous versions for Joomla! is vulnerable to cross-site scripting, caused by improper validation of user-supplied input.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 32.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
The Balbooa Gridbox extension version 2.4.0 and previous versions for Joomla! is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability via a crafted URL to execute script in a victim's Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 32.93% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- balbooa/gridbox
- Source
- cve@mitre.org
EPSS moved from 19.4% on 21 September 2026 to 32.9% on 27 October 2026, peaking at 33.5% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://packetstormsecurity.com/files/148127/Joomla-2.4.0-Gridbox-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2018/Jun/26Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/archive/1/542066/100/0/threadedExploit, Third Party Advisory, VDB Entry
- https://vel.joomla.org/resolved/2155-gridbox-com-gridbox-multiple-vulnerabilitiesVendor Advisory
- https://vulmon.com/vulnerabilitydetails?qid=CVE-2018-11690Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/148127/Joomla-2.4.0-Gridbox-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2018/Jun/26Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/archive/1/542066/100/0/threadedExploit, Third Party Advisory, VDB Entry
- https://vel.joomla.org/resolved/2155-gridbox-com-gridbox-multiple-vulnerabilitiesVendor Advisory
- https://vulmon.com/vulnerabilitydetails?qid=CVE-2018-11690Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.