How severe is CVE-2024-55156?

CVE-2024-55156 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2024-55156 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-55156?

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

Does CVE-2024-55156 have an EU (EUVD) identifier?

Yes. CVE-2024-55156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4494.

When was CVE-2024-55156 published?

CVE-2024-55156 was published on 2025-02-21 and last updated on 2026-06-17.

CVE-2024-55156

CVE-2024-55156 is a medium-severity vulnerability with a CVSS 3.x base score of 5.5. 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-134.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4494
Weakness: CWE-134
Published: 2025-02-21
Last modified: 2026-06-17

Description

An XML External Entity (XXE) vulnerability in the deserializeArgs() method of Java SDK for CloudEvents v4.0.1 allows attackers to access sensitive information via supplying a crafted XML-formatted event message.

Frequently asked questions

What is CVE-2024-55156?: An XML External Entity (XXE) vulnerability in the deserializeArgs() method of Java SDK for CloudEvents v4.0.1 allows attackers to access sensitive information via supplying a crafted XML-formatted event message.
How severe is CVE-2024-55156?: CVE-2024-55156 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2024-55156 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-55156?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-55156 have an EU (EUVD) identifier?: Yes. CVE-2024-55156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4494.
When was CVE-2024-55156 published?: CVE-2024-55156 was published on 2025-02-21 and last updated on 2026-06-17.

References

https://github.com/aixiao0621/CVE/blob/main/CVE-2024-55156/README.md

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