How severe is CVE-2016-4045?

CVE-2016-4045 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-4045 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4045?

CVE-2016-4045 affects Open-xchange Open-xchange Appsuite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4045?

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

When was CVE-2016-4045 published?

CVE-2016-4045 was published on 2016-12-15 and last updated on 2026-06-17.

CVE-2016-4045

CVE-2016-4045 is a medium-severity vulnerability in Open-xchange Open-xchange Appsuite with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Open-xchange Open-xchange Appsuite
Published: 2016-12-15
Last modified: 2026-06-17

Description

An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev11. Script code can be embedded to RSS feeds using a URL notation. In case a user clicks the corresponding link at the RSS reader of App Suite, code gets executed at the context of the user. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). The attacker needs to reside within the same context to make this attack work.

Frequently asked questions

What is CVE-2016-4045?: An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev11. Script code can be embedded to RSS feeds using a URL notation. In case a user clicks the corresponding link at the RSS reader of App Suite, code gets executed at the context of the user. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). The attacker needs to reside within the same context to make this attack work.
How severe is CVE-2016-4045?: CVE-2016-4045 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-4045 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4045?: CVE-2016-4045 affects Open-xchange Open-xchange Appsuite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4045?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4045 published?: CVE-2016-4045 was published on 2016-12-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open-xchange:open-xchange_appsuite:*:rev9:*:*:*:*:*:*

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