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CVE-2024-53868

Apache Traffic Server: Malformed chunked message body allows request smuggling

7.5 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

0.67%Up 0.7 points since Apr 3, 2025
90%50%10%1%

What each source reports

CVE List Score used 7.5

Apache Traffic Server: Malformed chunked message body allows request smuggling

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.

Record
CVE-2024-53868
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-444
Updated
2026-11-02
EUVDEUVD-2025-9584 7.5

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.

Record
EUVD-2025-9584
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-p9hw-v7q7-gmh5 7.5

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

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.

Record
GHSA-p9hw-v7q7-gmh5
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-444
Updated
2026-11-02
NVD 7.5

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.

Record
CVE-2024-53868
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-444
Updated
2026-11-02
OSVALPINE-CVE-2024-53868 7.5

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.

Record
ALPINE-CVE-2024-53868
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-03
OSV 7.5

Apache Traffic Server: Malformed chunked message body allows request smuggling

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.

Record
CVE-2024-53868
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-444
Updated
2026-11-02
Show 4 moreShow less
OSVDEBIAN-CVE-2024-53868 7.5

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.

Record
DEBIAN-CVE-2024-53868
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVOESA-2025-1415 6.5

trafficserver security update

Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse, forward and transparent proxy and cache.

Security Fix(es):

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.(CVE-2024-53868)

Record
OESA-2025-1415
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Updated
2026-11-02
OSVOESA-2025-1416 6.5

trafficserver security update

Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse, forward and transparent proxy and cache.

Security Fix(es):

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.(CVE-2024-53868)

Record
OESA-2025-1416
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2024-53868 7.5

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.

Record
UBUNTU-CVE-2024-53868
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
trafficserver9
Alpine:v3.21
 before 9.2.10-r0
9.2.10-r0
trafficserver9
Alpine:v3.22
 before 9.2.10-r0
9.2.10-r0
trafficserver9
Alpine:v3.23
 before 9.2.10-r0
9.2.10-r0
trafficserver9
Alpine:v3.24
 before 9.2.10-r0
9.2.10-r0
trafficserver
Debian:12
 before 9.2.5+ds-0+deb12u3, plus listed versions
9.2.0+ds-29.2.0+ds-2+deb12u19.2.1+ds-19.2.2+ds-19.2.3+ds-1
Show 6 moreShow less
9.2.3+ds-1+deb12u19.2.4+ds-0+deb12u19.2.4+ds-19.2.4+ds-29.2.5+ds-0+deb12u19.2.5+ds-0+deb12u2
9.2.5+ds-0+deb12u3
trafficserver
Debian:12
From an advisory covering 3 CVEs
 before 9.2.5+ds-0+deb12u3, plus listed versions
9.2.0+ds-29.2.0+ds-2+deb12u19.2.1+ds-19.2.2+ds-19.2.3+ds-1
Show 6 moreShow less
9.2.3+ds-1+deb12u19.2.4+ds-0+deb12u19.2.4+ds-19.2.4+ds-29.2.5+ds-0+deb12u19.2.5+ds-0+deb12u2
9.2.5+ds-0+deb12u3
trafficserver
openEuler:24.03-LTS
 before 9.2.5-5.oe2403
9.2.5-5.oe2403
trafficserver
openEuler:24.03-LTS-SP1
 before 9.2.5-5.oe2403sp1
9.2.5-5.oe2403sp1
trafficserver
Ubuntu:16.04:LTS
 All versions, plus listed versions
5.3.0-2ubuntu15.3.0-2ubuntu2
 None known
trafficserver
Ubuntu:18.04:LTS
 All versions, plus listed versions
7.0.0-57.1.2+ds-27.1.2+ds-2build17.1.2+ds-3
 None known
Show 4 moreShow less
Affected packages
PackageAffectedFixed
trafficserver
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
8.0.5+ds-18.0.5+ds-28.0.5+ds-2build18.0.5+ds-2ubuntu18.0.5+ds-38.0.5+ds-3ubuntu0.1~esm1
 None known
trafficserver
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
8.1.1+ds-1.19.1.1+ds-2build19.1.1+ds-2ubuntu0.1~esm19.1.1+ds-2ubuntu0.19.1.1+ds-2ubuntu0.1+esm1
 None known
trafficserver
Ubuntu:24.04:LTS
 All versions, plus listed versions
9.2.1+ds-1build19.2.2+ds-19.2.3+ds-19.2.3+ds-1+deb12u19.2.3+ds-1+deb12u1build19.2.3+ds-1+deb12u1build39.2.3+ds-1+deb12u1build49.2.3+ds-1+deb12u1ubuntu0.1
 None known
trafficserver
Ubuntu:25.10
 All versions, plus listed versions
9.2.5+ds-1ubuntu19.2.5+ds-1ubuntu29.2.5+ds-1ubuntu2.1
 None known

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-53868 is a high vulnerability (CVSS 7.5) in Apache Traffic Server, published April 3, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.67%, the 52nd percentile. Fixed in trafficserver9 9.2.10-r0.

References

Show 7 moreShow less
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