CVE-2026-58187

EUVD-2026-50232
The Apache Traffic Server multiplexer plugin overruns its chunk-decode buffer on upstream input, enabling denial of service.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.

Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.7 LOW
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 27.62%
Affected Products (NVD)
VendorProductVersion
apachetraffic_server
8.0.0 ≤
𝑥
≤ 8.1.9
apachetraffic_server
9.0.0 ≤
𝑥
< 9.2.15
apachetraffic_server
10.0.0 ≤
𝑥
< 10.1.4
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
trafficserver
bookworm
vulnerable
bookworm (security)
vulnerable
sid
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
trafficserver
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
dne
xenial
needs-triage
Common Weakness Enumeration
References
https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d