What is CVE-2019-10079?

CVE-2019-10079 is a high-severity vulnerability in Apache Traffic Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2019-10-22.

How severe is CVE-2019-10079?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Apache Traffic Server

CVE-2019-10079

Apache Traffic Server is vulnerable to HTTP/2 setting flood attacks. Earlier versions of Apache Traffic Server didn't limit the number of setting frames sent from the client using the HTTP/2 protocol. Users should upgrade to Apache Traffic Server 7.1.7, 8.0.4, or later versions.

Published 2019-10-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.046 (91.3th percentile), scored 2026-10-04.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.046 · newest: 0.046 · change: 0.000

Affected products

Apache Traffic Server
Apache Traffic Server — versions Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.6, and 8.0.0 to 8.0.3

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0… (mailing-list)
lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5380e050e35ae8d1aa2030… (mailing-list)
lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5bf98c011c7c536f07a5d3… (mailing-list)

Frequently asked questions

What is CVE-2019-10079?: CVE-2019-10079 is a high-severity vulnerability in Apache Traffic Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2019-10-22.
How severe is CVE-2019-10079?: High severity. CVSS v3 base score is 7.5 out of 10.