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CVE-2024-38311

Apache Traffic Server: Request smuggling via pipelining after a chunked message body

6.3 MediumFix available

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.91%Up 0.9 points since Mar 7, 2025
90%50%10%1%

What each source reports

CVE List Score used 6.3

Apache Traffic Server: Request smuggling via pipelining after a chunked message body

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.

Record
CVE-2024-38311
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-20
Updated
2026-11-02
EUVDEUVD-2025-6109 6.3

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.

Record
EUVD-2025-6109
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
GitHub AdvisoriesGHSA-53v8-xp2g-qpcw 6.3

Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache...

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.

Record
GHSA-53v8-xp2g-qpcw
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-20
Updated
2026-11-02
NVD 6.3

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.

Record
CVE-2024-38311
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-20
Updated
2026-11-02
OSV 6.3

Apache Traffic Server: Request smuggling via pipelining after a chunked message body

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.

Record
CVE-2024-38311
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-20
Updated
2026-11-02
OSVDEBIAN-CVE-2024-38311 6.3

Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3. Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.

Record
DEBIAN-CVE-2024-38311
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVOESA-2025-1289 6.3

trafficserver security update

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

Security Fix(es):

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.(CVE-2024-38311)

Improper Access Control vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 9.2.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.(CVE-2024-56195)

Expected Behavior Violation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to versions 9.2.9 or 10.0.4 or newer, which fixes the issue.(CVE-2024-56202)

Record
OESA-2025-1289
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVOESA-2025-1290 6.3

trafficserver security update

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

Security Fix(es):

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.(CVE-2024-38311)

Improper Access Control vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 9.2.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.(CVE-2024-56195)

Expected Behavior Violation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3.

Users are recommended to upgrade to versions 9.2.9 or 10.0.4 or newer, which fixes the issue.(CVE-2024-56202)

Record
OESA-2025-1290
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2024-38311 6.3

Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.8, from 10.0.0 through 10.0.3. Users are recommended to upgrade to version 9.2.9 or 10.0.4, which fixes the issue.

Record
UBUNTU-CVE-2024-38311
CVSS 3.1
6.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
trafficserver
Debian:12
 before 9.2.5+ds-0+deb12u2, 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 5 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+deb12u1
9.2.5+ds-0+deb12u2
trafficserver
Debian:12
From an advisory covering 6 CVEs
 before 9.2.5+ds-0+deb12u2, 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 5 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+deb12u1
9.2.5+ds-0+deb12u2
trafficserver
openEuler:24.03-LTS
From an advisory covering 3 CVEs
 before 9.2.5-4.oe2403
9.2.5-4.oe2403
trafficserver
openEuler:24.03-LTS-SP1
From an advisory covering 3 CVEs
 before 9.2.5-4.oe2403sp1
9.2.5-4.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
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
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

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

In short

CVE-2024-38311 is a medium vulnerability (CVSS 6.3) in Apache Traffic Server, published March 6, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.91%, the 60th percentile. Fixed in trafficserver 9.2.5+ds-0+deb12u2.

References

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