CVE-2017-15892: Multiple cross-site scripting (XSS) vulnerabilities in Slash Command Creator in Synology Chat before 2.0.0-112

Q: How do I fix CVE-2017-15892?

chat: upgrade to 2.0.0-1124. Exact commands for each OS are on this page.

Q: Is CVE-2017-15892 being exploited?

CVE-2017-15892 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-2017-15892 affect?

CVE-2017-15892 affects chat. Severity is medium (CVSS 5.4). Multiple cross-site scripting (XSS) vulnerabilities in Slash Command Creator in Synology Chat before 2.0.0-1124 allow remote authenticated users to inject arbitrary web script or HTML via (1) COMMAND, (2) COMMANDS INSTRUCTION, or (3) DESCRI

Q: How urgent is CVE-2017-15892?

Priority 35/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2017-15892 is a medium-severity flaw (CVSS 5.4) affecting chat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in Slash Command Creator in Synology Chat before 2.0.0-1124 allow remote authenticated users to inject arbitrary web script or HTML via (1) COMMAND, (2) COMMANDS INSTRUCTION, or (3) DESCRIPTION parameter.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-12-28
Last modified	2026-06-17

Publisher (CNA): Synology Inc. · Vendor: synology

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

Am I affected?

Timeline

2017-12-28 15:29 UTCPublished CVE record published
2026-06-17 01:08 UTCUpdated Record last modified

synology chat UPGRADE

Affected: < 2.0.0-1124

Fixed in: 2.0.0-1124

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.0.0-1124 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chat

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-2017-15892?

chat: upgrade to 2.0.0-1124. Exact commands for each OS are on this page.

Is CVE-2017-15892 being exploited?

CVE-2017-15892 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-2017-15892 affect?

CVE-2017-15892 affects chat. Severity is medium (CVSS 5.4). Multiple cross-site scripting (XSS) vulnerabilities in Slash Command Creator in Synology Chat before 2.0.0-1124 allow remote authenticated users to inject arbitrary web script or HTML via (1) COMMAND, (2) COMMANDS INSTRUCTION, or (3) DESCRI

How urgent is CVE-2017-15892?

Priority 35/100. No elevated risk signals yet.

Software pages

Synology vulnerabilities

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References

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