CVE-2026-62852

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 63/100
Published: 2026-11-06 Modified: 2026-11-12 First seen: 2026-11-06 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: None
A: None

Description

FreeScout is a self-hosted help desk and shared mailbox. Prior to 1.8.226, RealtimeConvNewThread checks only general mailbox access and does not apply the conversation-level restriction for users configured to see only assigned conversations. A restricted authenticated user can subscribe to predictable conv.<conversation_id> Polycast channels for other conversations in the same mailbox. New event payloads can expose complete replies, internal notes, recipient addresses, conversation state, assignee data, attachment names, and attachment URLs containing valid download tokens. This issue is fixed in version 1.8.226.

Weakness Classification (3)

Affected Software (2)

VendorProductVersion
freescout-help-desk freescout < 1.8.226
freescout-help-desk freescout < 1.8.226

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.23%
Raw Score 0.002310
Percentile 14.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00231
2026-11-12
0.00231
2026-11-10
0.00231
2026-11-09
0.00231
2026-11-08
0.00231
2026-11-07
0.00231

Intelligence Sources

mitre ref →
nvd ref →