Cross-site scripting in premio Floating Chat Widget: Contact Chat Icons, Telegram Chat…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Floating Chat Widget: Contact Chat Icons, Telegram Chat, Line Messenger, WeChat, Email, SMS, Call Button – Chaty plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 's' parameter in all versions up to, and including, 3.5.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. WordPress's server-side HTML encoding of the 's' search parameter in the <title> element is bypassed because the browser DOM API decodes HTML entities when jQuery's .text() method reads document.title, returning literal special characters that are then embedded unescaped into the constructed HTML attribute value.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| premio | Floating Chat Widget: Contact Chat Icons, Telegram Chat, Line Messenger, WeChat, Email, SMS, Call Button – Chaty | up to 3.5.9 | — | No fix listed | CNA |
- Floating Chat Widget: Contact Chat Icons, Telegram Chat, Line Messenger, WeChat, Email, SMS, Call Button – Chaty Vendorpremio Affected up to 3.5.9 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18964
- 2026-10-03 Alias added: GHSA-634q-j8cp-w5hg
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/918af0dc-afad-4645-b4ad-8b10a34e20b2?source=cve
- https://plugins.trac.wordpress.org/browser/chaty/trunk/js/cht-front-script.min.js#L1
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3637386%40chaty%2Ftrunk%2Fjs%2Fcht-front-script.min.js&old=3485342%40chaty%2Ftrunk%2Fjs%2Fcht-front-script.min.js&sfp_email=&sfph_mail=
More premio vulnerabilities
- TI-2023-00461 My Sticky Elements < 2.0.9 - Admin+ SQLi CVSS 3.1HIGH 7.2
- TI-2022-03536 Chaty < 3.0.3 - Admin+ SQLi CVSS 3.1HIGH 7.2
- TI-2024-03862 Floating Chat Widget < 3.2.3 - Admin+ Stored XSS CVSS 3.1MEDIUM 6.1
- TI-2024-06602 My Sticky Bar < 2.7.3 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2024-03810 My Sticky Bar < 2.7.2 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2024-02459 My Sticky Bar < 2.6.8 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
Sources
- CVE-2026-18964 · CVE Program
- CVE-2026-18964 · NVD
- FIRST EPSS
- GHSA-634q-j8cp-w5hg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences