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Vulnerability record · CVE-2019-17555 · published 4 December 2019

CVE-2019-17555: Apache olingo improper input validation vulnerability

Apache · Olingo

The AsyncResponseWrapperImpl class in Apache Olingo versions 4.0.0 to 4.6.0 reads the Retry-After header and passes it to the Thread.sleep() method without any check. If a malicious server returns a huge value in the header, then it can help to implement a DoS attack.

7.5 CVSS 3.1 High EPSS 2.1% · top 19.4% CWE-20 · Improper input validation
7.5CVSS 3.1 base score, v2 5.0
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

The AsyncResponseWrapperImpl class in Apache Olingo versions 4.0.0 to 4.6.0 reads the Retry-After header and passes it to the Thread.sleep() method without any check. If a malicious server returns a huge value in the header, then it can help to implement a DoS attack.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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/%3CCAGSZ4d65UmudJ_MQkFXEv9YY_wwZbRA3sgtNDzMoLM51Qh%3DR Mailing ListVendor Advisory
https://mail-archives.apache.org/mod_mbox/olingo-user/201912.mbox/%3CCAGSZ4d65UmudJ_MQkFXEv9YY_wwZbRA3sgtNDzMoLM51Qh%3DR 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-2019-17555), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.