Apache Qpid Proton-J up to 0.34.1 Transfer Frame allocation of resources

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k1.81+

Summaryinfo

A vulnerability classified as problematic has been found in Apache Qpid Proton-J up to 0.34.1. Affected by this issue is some unknown functionality of the component Transfer Frame Handler. This manipulation causes allocation of resources. This vulnerability is registered as CVE-2026-66277. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache Qpid Proton-J up to 0.34.1. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component Transfer Frame Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. The summary by CVE is:

It was not possible to govern the maximum number of transfer frames per incoming delivery, enabling an authenticated attacker to cause excessive resource usage and potential denial of service. This issue affects Apache Qpid Proton-J: through 0.34.1. Users are recommended to upgrade to version 0.35.0, which fixes the issue.

It is possible to read the advisory at lists.apache.org. This vulnerability is known as CVE-2026-66277 since 07/24/2026. The exploitation appears to be easy. The attack can be launched remotely. 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 08/05/2026). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 0.35.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Qpid Proton-J 0.35.0

Timelineinfo

07/24/2026 CVE reserved
08/05/2026 +12 days Advisory disclosed
08/05/2026 +0 days VulDB entry created
08/05/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Status: Confirmed

CVE: CVE-2026-66277 (🔒)
GCVE (CVE): GCVE-0-2026-66277
GCVE (VulDB): GCVE-100-386035

Entryinfo

Created: 08/05/2026 08:38
Changes: 08/05/2026 08:38 (54)
Complete: 🔍
Cache ID: 216::103

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