How severe is CVE-2023-6839?

CVE-2023-6839 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-6839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6839?

CVE-2023-6839 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-2023-6839?

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

When was CVE-2023-6839 published?

CVE-2023-6839 was published on 2023-12-15 and last updated on 2026-06-17.

CVE-2023-6839

CVE-2023-6839 is a medium-severity vulnerability in Wso2 Api Manager with a CVSS 3.x base score of 5.3. 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-209.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-209
Affected product: Wso2 Api Manager
Published: 2023-12-15
Last modified: 2026-06-17

Description

Due to improper error handling, a REST API resource could expose a server side error containing an internal WSO2 specific package name in the HTTP response.

Frequently asked questions

What is CVE-2023-6839?: Due to improper error handling, a REST API resource could expose a server side error containing an internal WSO2 specific package name in the HTTP response.
How severe is CVE-2023-6839?: CVE-2023-6839 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-6839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6839?: CVE-2023-6839 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-2023-6839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-6839 published?: CVE-2023-6839 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/2022/WSO2-2021-1334/

Affected products (4)

cpe:2.3:a:wso2:api_manager:3.0.0:*:*:*:*:*:*:*
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:api_manager:4.0.0:*:*:*:*:*:*:*

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