How severe is CVE-2023-6838?

CVE-2023-6838 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-2023-6838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6838?

CVE-2023-6838 primarily affects Wso2 Api Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-6838?

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

When was CVE-2023-6838 published?

CVE-2023-6838 was published on 2023-12-15 and last updated on 2026-06-17.

CVE-2023-6838

CVE-2023-6838 is a medium-severity vulnerability in Wso2 Api 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)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Wso2 Api Manager
Published: 2023-12-15
Last modified: 2026-06-17

Description

Reflected XSS vulnerability can be exploited by tampering a request parameter in Authentication Endpoint. This can be performed in both authenticated and unauthenticated requests.

Frequently asked questions

What is CVE-2023-6838?: Reflected XSS vulnerability can be exploited by tampering a request parameter in Authentication Endpoint. This can be performed in both authenticated and unauthenticated requests.
How severe is CVE-2023-6838?: CVE-2023-6838 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-2023-6838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6838?: CVE-2023-6838 primarily affects Wso2 Api Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-6838?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-6838 published?: CVE-2023-6838 was published on 2023-12-15 and last updated on 2026-06-17.

References

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2021/WSO2-2020-1233/

Affected products (4)

cpe:2.3:a:wso2:api_manager:3.1.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:api_manager:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server_as_key_manager:5.10.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:5.10.0:*:*:*:*:*:*:*

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