How severe is CVE-2018-4876?

CVE-2018-4876 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-2018-4876 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-4876?

CVE-2018-4876 primarily affects Adobe Experience Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-4876?

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

When was CVE-2018-4876 published?

CVE-2018-4876 was published on 2018-02-27 and last updated on 2026-06-17.

CVE-2018-4876

CVE-2018-4876 is a medium-severity vulnerability in Adobe Experience Manager 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: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Adobe Experience Manager
Published: 2018-02-27
Last modified: 2026-06-17

Description

Adobe Experience Manager versions 6.3, 6.2, and 6.1 are vulnerable to cross-site scripting via a bypass of the Sling XSSAPI#getValidHref function.

Frequently asked questions

What is CVE-2018-4876?: Adobe Experience Manager versions 6.3, 6.2, and 6.1 are vulnerable to cross-site scripting via a bypass of the Sling XSSAPI#getValidHref function.
How severe is CVE-2018-4876?: CVE-2018-4876 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-2018-4876 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-4876?: CVE-2018-4876 primarily affects Adobe Experience Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-4876?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-4876 published?: CVE-2018-4876 was published on 2018-02-27 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:adobe:experience_manager:6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:experience_manager:6.2.0:*:*:*:*:*:*:*
cpe:2.3:a:adobe:experience_manager:6.3.0:*:*:*:*:*:*:*

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