How severe is CVE-2023-50454?

CVE-2023-50454 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-50454 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-50454?

CVE-2023-50454 primarily affects Zammad. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-50454?

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

When was CVE-2023-50454 published?

CVE-2023-50454 was published on 2023-12-10 and last updated on 2026-06-17.

CVE-2023-50454

CVE-2023-50454 is a medium-severity vulnerability in Zammad with a CVSS 3.x base score of 5.9. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Zammad
Published: 2023-12-10
Last modified: 2026-06-17

Description

An issue was discovered in Zammad before 6.2.0. In several subsystems, SSL/TLS was used to establish connections to external services without proper validation of hostname and certificate authority. This is exploitable by man-in-the-middle attackers.

Frequently asked questions

What is CVE-2023-50454?: An issue was discovered in Zammad before 6.2.0. In several subsystems, SSL/TLS was used to establish connections to external services without proper validation of hostname and certificate authority. This is exploitable by man-in-the-middle attackers.
How severe is CVE-2023-50454?: CVE-2023-50454 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-50454 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-50454?: CVE-2023-50454 primarily affects Zammad. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-50454?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-50454 published?: CVE-2023-50454 was published on 2023-12-10 and last updated on 2026-06-17.

References

https://zammad.com/en/advisories/zaa-2023-04

Affected products (3)

cpe:2.3:a:zammad:zammad:6.1.0:-:*:*:*:*:*:*
cpe:2.3:a:zammad:zammad:6.1.0:alpha:*:*:*:*:*:*
cpe:2.3:a:zammad:zammad:6.2.0:alpha:*:*:*:*:*:*

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