CVE-2026-58153

EUVD-2026-50205
Apache Traffic Server forwards HTTP/2 origin trailers to HTTP/1 clients without proper chunked framing when converting HTTP/2 to HTTP/1.

This issue affects Apache Traffic Server: 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.
HTTP Request/Response Smuggling
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.3 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 38.91%
Affected Products (NVD)
VendorProductVersion
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