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Fencer Vulns
high 7.5

CVE-2024-53868 json

Apache Traffic Server: Malformed chunked message body allows request smuggling

published 2025-04-03 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-9584

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

Apache Traffic Server allows request smuggling if chunked messages are malformed.

This issue affects Apache Traffic Server: from 9.2.0 through 9.2.9, from 10.0.0 through 10.0.4.

Users are recommended to upgrade to version 9.2.10 or 10.0.5, which fixes the issue.

Patch / fix

  • apache traffic_server 9.2.10, 10.0.5
  • trafficserver Debian 12 9.2.5+ds-0+deb12u3

debian advisories DEBIAN-CVE-2024-53868

  • trafficserver9 Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 9.2.10-r0

alpine advisories ALPINE-CVE-2024-53868

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-53868 updated cvss 6.5

trafficserver.apache.org: Apache Traffic Server: Malformed chunked message body allows request smuggling

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Apache Software Foundation Apache Traffic Server

Classification

Weakness
  • CWE-444 Inconsistent Interpretation of HTTP Requests

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.