Unblu Spark Cross-Site Scripting in Embedded Co-Browsing
Cross-site scripting in the embedded co-browsing feature in Unblu inc. Unblu Spark 7.0 through 7.57.7 and 8.0 through 8.39.2, on on-premises and cloud deployments, allows an unauthenticated remote attacker in the visitor role to execute arbitrary JavaScript in the browser of an agent taking part in the attacker's co-browsing session, via content of the co-browsed page that the agent's browser renders as HTML. The JavaScript runs in the context and under the identity of the agent's session in the Agent Desk or the Single Conversation Desk. Exploitation requires an agent to join an embedded co-browsing session with the attacker. Mobile co-apping isn't affected.
CVE-2026-14933
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-14933
Unblu Spark
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Unblu inc.",
"product": "Unblu Spark",
"versions": [
{
"status": "unaffected",
"version": "8.35.2-hotfix.0",
"lessThan": "8.35.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "8.37.2-hotfix.2",
"lessThan": "8.37.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "8.38.2-hotfix.0",
"lessThan": "8.38.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "7.0",
"versionType": "semver",
"lessThanOrEqual": "7.57.7"
},
{
"status": "affected",
"version": "8.0",
"versionType": "semver",
"lessThanOrEqual": "8.39.2"
},
{
"status": "unaffected",
"version": "8.39.3"
}
],
"platforms": [
"On-premises",
"Cloud"
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-14933
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #42261 · Revision 1
- Added to Heist Feed
- Publisher date