VulnTideExploited vulnerabilities, by vendor. Data as of .
Not in CISA KEVReported exploited: VulnCheck KEV since Published CVSS 7.7 highEPSS 0.3% probability of exploitation in 30 days
freescout-help-desk

CVE-2026-62856: FreeScout: Cross-User Notification Data Disclosure via LIKE Wildcard Injection in Polycast Channel Query

Is it exploited?

Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .

VulnCheck KEV lists it since . VulnCheck's own honeypots also recorded exploitation attempts.

How likely is exploitation in the next 30 days?
0.3%

EPSS score, percentile 17.5 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?
7.7 High

CVSS v3.1 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

No patch or vendor advisory is listed in the CVE record. Check freescout-help-desk's advisories.

Which versions are affected?

Affected

  • < 1.8.226

Versions by product

Source: CISA KEV 2026.11.10, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.

Description

FreeScout: Cross-User Notification Data Disclosure via LIKE Wildcard Injection in Polycast Channel Query

FreeScout is a self-hosted help desk and shared mailbox application. Prior to version 1.8.226, the  polycast/receive  endpoint fails to escape SQL LIKE wildcards in supplied channel names, while channel authorization applies only to names with specific prefixes. An unauthenticated attacker with a guest session and valid CSRF token can submit a wildcard channel name to retrieve matching notification events intended for other users. Notification payload generation lacks a corresponding access check, exposing conversation message content, identifiers, URLs, and notification HTML across users and mailboxes. This issue is fixed in version 1.8.226.

Source: CVE List, as of . About the data.

What to do

Advisories and patches

No patch, vendor advisory or mitigation is listed in the CVE record. Check freescout-help-desk's own security advisories for a fix, and compare your version with the affected versions below.

This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Versions by product, as listed in the CVE record (1 product)
freescout-help-desk freescout
StatusVersions
Affected< 1.8.226

Source: CVE List, as of . About the data.

Weakness

CWE-89, CWE-200, CWE-639
  • CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-639: Authorization Bypass Through User-Controlled Key

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

DateEvent
CVE record published
CVE record last updated

References

4