Moby up to 29.3.0 off-by-one

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Moby up to 29.3.0 and classified as problematic. Impacted is an unknown function. Performing a manipulation results in off-by-one. This vulnerability is known as CVE-2026-33997. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Moby up to 29.3.0. This affects an unknown part. The manipulation with an unknown input leads to a off-by-one vulnerability. CWE is classifying the issue as CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows plugins privilege validation to be bypassed during docker plugin install. Due to an error in the daemon's privilege comparison logic, the daemon may incorrectly accept a privilege set that differs from the one approved by the user. Plugins that request exactly one privilege are also affected, because no comparison is performed at all. This issue has been patched in version 29.3.1.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-33997 since 03/24/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 310540 (Fedora 44 : moby-engine (2026-853a2fa7e5)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 29.3.1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the databases at Tenable (310540) and CERT Bund (WID-SEC-2026-0873). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Container-Optimized OS
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • SUSE openSUSE
  • IBM MQ
  • Open Source docker
  • Red Hat OpenShift

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔒

CNA Base Score: 6.8
CNA Vector (GitHub_M): 🔒

CVSSv2info

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

Exploitinginfo

Class: Off-by-one
CWE: CWE-193 / CWE-189
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: 310540
Nessus Name: Fedora 44 : moby-engine (2026-853a2fa7e5)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Moby 29.3.1

Timelineinfo

03/24/2026 CVE reserved
03/31/2026 +6 days Advisory disclosed
03/31/2026 +0 days VulDB entry created
06/20/2026 +81 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-pxq6-2prw-chj9
Status: Confirmed

CVE: CVE-2026-33997 (🔒)
GCVE (CVE): GCVE-0-2026-33997
GCVE (VulDB): GCVE-100-354315
CERT Bund: WID-SEC-2026-0873 - docker: Mehrere Schwachstellen

Entryinfo

Created: 03/31/2026 08:13
Updated: 06/20/2026 05:58
Changes: 03/31/2026 08:13 (63), 04/28/2026 06:08 (2), 05/04/2026 07:14 (7), 06/16/2026 17:17 (12), 06/20/2026 05:58 (1)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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