Apache Traffic Server up to 9.2.14/10.1.3 expected behavior violation

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Apache Traffic Server up to 9.2.14/10.1.3 and classified as very critical. This vulnerability affects unknown code. This manipulation causes expected behavior violation. The identification of this vulnerability is CVE-2026-24033. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Apache Traffic Server up to 9.2.14/10.1.3 and classified as very critical. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a expected behavior violation vulnerability. The CWE definition for the vulnerability is CWE-440. A feature, API, or function does not perform according to its specification. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.3, from 9.0.0 through 9.2.14. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.

It is possible to read the advisory at lists.apache.org. This vulnerability is known as CVE-2026-24033 since 01/20/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/07/2026).

The vulnerability scanner Nessus provides a plugin with the ID 333156 (Fedora 44 : trafficserver (2026-5bec7441bb)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.2.15 or 10.1.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (333156), EUVD (EUVD-2026-50170) and CERT Bund (WID-SEC-2026-2561). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Apache Traffic Server

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Expected behavior violation
CWE: CWE-440 / CWE-436
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 333156
Nessus Name: Fedora 44 : trafficserver (2026-5bec7441bb)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Traffic Server 9.2.15/10.1.4

Timelineinfo

01/20/2026 CVE reserved
07/29/2026 +189 days Advisory disclosed
07/29/2026 +0 days VulDB entry created
08/07/2026 +9 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Status: Confirmed

CVE: CVE-2026-24033 (🔒)
GCVE (CVE): GCVE-0-2026-24033
GCVE (VulDB): GCVE-100-384079
EUVD: 🔒
CERT Bund: WID-SEC-2026-2561 - Apache Traffic Server: Mehrere Schwachstellen

Entryinfo

Created: 07/29/2026 09:48
Updated: 08/07/2026 09:08
Changes: 07/29/2026 09:48 (53), 07/29/2026 12:58 (1), 07/30/2026 10:51 (7), 08/07/2026 09:08 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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