CVE-2026-35584: FreeScout is a free help desk and shared inbox built with PHP's Laravel framework

Q: How do I fix CVE-2026-35584?

freescout: upgrade to 1.8.212. Exact commands for each OS are on this page.

Q: Is CVE-2026-35584 being exploited?

CVE-2026-35584 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-35584 affect?

CVE-2026-35584 affects freescout. Severity is medium (CVSS 6.5). FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.212, the endpoint GET /thread/read/{conversation_id}/{thread_id} does not require authentication and does not validate whether the given thread_

Q: How urgent is CVE-2026-35584?

Priority 39/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 6.5REMOTEUPGRADE

CVE-2026-35584 is a medium-severity flaw (CVSS 6.5) affecting freescout. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.212, the endpoint GET /thread/read/{conversation_id}/{thread_id} does not require authentication and does not validate whether the given thread_id belongs to the given conversation_id. This allows any unauthenticated attacker to mark any thread as read by passing arbitrary IDs, enumerate valid thread IDs via HTTP response codes (200 vs 404), and manipu

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-306, CWE-639
Published	2026-04-07
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: freescout

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-07 17:16 UTCPublished CVE record published
2026-06-17 10:40 UTCUpdated Record last modified

freescout freescout UPGRADE

Affected: < 1.8.212

Fixed in: 1.8.212

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy freescout || rpm -q freescout || freescout --version

2. UPGRADE to 1.8.212 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade freescout

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade freescout

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-35584?

freescout: upgrade to 1.8.212. Exact commands for each OS are on this page.

Is CVE-2026-35584 being exploited?

CVE-2026-35584 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-35584 affect?

CVE-2026-35584 affects freescout. Severity is medium (CVSS 6.5). FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.212, the endpoint GET /thread/read/{conversation_id}/{thread_id} does not require authentication and does not validate whether the given thread_

How urgent is CVE-2026-35584?

Priority 39/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities · Laravel vulnerabilities

Related CVEs

CVE-2026-40565 MEDIUM 6.1 UPGRADE FreeScout is a free self-hosted help desk and shared mailbox
CVE-2026-40498 CRITICAL 9.8 UPGRADE FreeScout is a free self-hosted help desk and shared mailbox
CVE-2026-40497 HIGH 8.1 UPGRADE FreeScout is a free self-hosted help desk and shared mailbox
CVE-2026-40496 CRITICAL 9.1 UPGRADE FreeScout is a free self-hosted help desk and shared mailbox
CVE-2026-39384 HIGH 7.6 UPGRADE FreeScout is a free help desk and shared inbox built with PHP's Laravel framework

References

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