There is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and chunked en…

published 2020-03-23 6y ago modified 2026-06-17 4mo ago also EUVD-2019-7904

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.2%; EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits: 0; none known

There is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and chunked encoding. Upgrade to versions 7.1.9 and 8.0.6 or later versions.

Patch / fix

distros 1

trafficserver Debian 12 8.0.6+ds-1

debian advisories DEBIAN-CVE-2019-17565

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Exploit prediction

3.17% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a Apache Traffic Server

Classification

Weakness

CWE-444 Inconsistent Interpretation of HTTP Requests

References

debian.org /security/2020/dsa-4672
vendor-advisory, third-party-advisory
lists.apache.org /thread.html/r99d18d0bc4daa05e7d0e5a63e0e22701a421b2ef5a8f4f7694c43869%40%3Cannounce.trafficserver.apache.org%
mailing-list, vendor-advisory

Sources

CVE List CVE-2019-17565
NVD CVE-2019-17565

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