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Vulnerability record · CVE-2019-17556 · published 4 December 2019

CVE-2019-17556: Apache olingo deserialization of untrusted data vulnerability

Apache · Olingo

Apache Olingo versions 4.0.0 to 4.6.0 provide the AbstractService class, which is public API, uses ObjectInputStream and doesn't check classes being deserialized. If an attacker can feed malicious metadata to the class, then it may result in running attacker's code in the worse case.

9.8 CVSS 3.1 Critical EPSS 3.6% · top 10.9% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score, v2 10.0
3.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Apache Olingo versions 4.0.0 to 4.6.0 provide the AbstractService class, which is public API, uses ObjectInputStream and doesn't check classes being deserialized. If an attacker can feed malicious metadata to the class, then it may result in running attacker's code in the worse case.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://mail-archives.apache.org/mod_mbox/olingo-user/201912.mbox/%3CCAGSZ4d4vbSYaVh3aUWAvcVHK2qcFxxCZd3WAx3xbwZXskPX8nw Mailing ListVendor Advisory
https://mail-archives.apache.org/mod_mbox/olingo-user/201912.mbox/%3CCAGSZ4d4vbSYaVh3aUWAvcVHK2qcFxxCZd3WAx3xbwZXskPX8nw Mailing ListVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-17556), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.