How severe is CVE-2017-8802?

CVE-2017-8802 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-8802 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8802?

CVE-2017-8802 primarily affects Synocor Zimbra Collaboration Suite. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-8802?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-8802 published?

CVE-2017-8802 was published on 2018-01-16 and last updated on 2026-06-17.

CVE-2017-8802

CVE-2017-8802 is a medium-severity vulnerability in Synocor Zimbra Collaboration Suite with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Synocor Zimbra Collaboration Suite
Published: 2018-01-16
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2017-8802?: 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 severe is CVE-2017-8802?: CVE-2017-8802 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-8802 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8802?: CVE-2017-8802 primarily affects Synocor Zimbra Collaboration Suite. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-8802?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8802 published?: CVE-2017-8802 was published on 2018-01-16 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:synocor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*
cpe:2.3:a:synocor:zimbra_collaboration_suite:8.8.0:beta1:*:*:*:*:*:*

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