CVE-2017-8802: Cross-site scripting (XSS) vulnerability in Zimbra Collaboration Suite (aka ZCS) before 8.8.0 Beta2 might allo

Q: How do I fix CVE-2017-8802?

zimbra collaboration suite: upgrade to newer than 8.7.11. Exact commands for each OS are on this page.

Q: Is CVE-2017-8802 being exploited?

CVE-2017-8802 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-2017-8802 affect?

CVE-2017-8802 affects zimbra collaboration suite. Severity is medium (CVSS 5.4). Cross-site scripting (XSS) vulnerability in Zimbra Collaboration Suite (aka ZCS) before 8.8.0 Beta2 might allow remote attackers to inject arbitrary web script or HTML via vectors related to the "Show Snippet" functionality.

Q: How urgent is CVE-2017-8802?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2017-8802 is a medium-severity flaw (CVSS 5.4) affecting zimbra collaboration suite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in Zimbra Collaboration Suite (aka ZCS) before 8.8.0 Beta2 might allow remote attackers to inject arbitrary web script or HTML via vectors related to the "Show Snippet" functionality.

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	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-01-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: synocor

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

Am I affected?

Timeline

2018-01-16 19:29 UTCPublished CVE record published
2026-06-17 01:26 UTCUpdated Record last modified

synocor zimbra collaboration suite UPGRADE

Affected: <= 8.7.11 · 8.8.0 beta1

Fixed in: newer than 8.7.11

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy zimbra-collaboration-suite || rpm -q zimbra-collaboration-suite || zimbra-collaboration-suite --version

2. UPGRADE to newer than 8.7.11 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zimbra-collaboration-suite

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zimbra-collaboration-suite

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-2017-8802?

zimbra collaboration suite: upgrade to newer than 8.7.11. Exact commands for each OS are on this page.

Is CVE-2017-8802 being exploited?

CVE-2017-8802 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-2017-8802 affect?

CVE-2017-8802 affects zimbra collaboration suite. Severity is medium (CVSS 5.4). Cross-site scripting (XSS) vulnerability in Zimbra Collaboration Suite (aka ZCS) before 8.8.0 Beta2 might allow remote attackers to inject arbitrary web script or HTML via vectors related to the "Show Snippet" functionality.

How urgent is CVE-2017-8802?

Priority 36/100. No elevated risk signals yet.

Software pages

Zimbra vulnerabilities

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References

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