8.3

CVE-2026-58153: apache software foundation apache traffic server HTTP Request/Response Smuggling

CVSS: 8.3v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-58153DEBIAN-CVE-2026-58153
Published 29-07-2026Last modified 29-07-2026
Open JSON

Vulnerability summary

CVE-2026-58153 is a high (CVSS 8.3) HTTP Request/Response Smuggling vulnerability in apache software foundation apache traffic server. EPSS estimates a 0.64% chance of exploitation in the next 30 days, higher than 49.6% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v3.1 (CVE.org)
EPSS score
0.64%
0%100%
Low · +0.18 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 29-07-2026
    PublishedVulnerability first disclosed.
  2. 29-07-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.64%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

+0.18 pp

From 0.46% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.64%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache1 product
Apache software foundation1 product
Debian1 product
  • trafficserverAll versions (No fix recorded)
Ubuntu1 product
  • trafficserverAll versions (No fix recorded)

4 vendors · 4 products

References

4 links