CVE-2026-55079 Vulnerability Analysis & Exploit Details

CVE-2026-55079
Vulnerability Scoring

4.9

/10

Medium Risk

The vulnerability CVE-2026-55079 could compromise system integrity but typically requires user interaction to be exploited.

Attack Complexity Details

Attack Complexity: Low
Exploits can be performed without significant complexity or special conditions.
Attack Vector: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: High
High-level privileges are required for exploitation.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2026-55079 Details

Status: Analyzed

Published on: 08 Jul 2026, 00:16 UTC

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVE-2026-55079 Vulnerability Summary

CVE-2026-55079: Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.24.0 and prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `NewDataBuilder` in `provisionersdk/proto/dataupload.go` allocated a byte slice using the client-supplied `FileSize` from a `DataUpload` message without an upper-bound check. Although the DRPC wire limit is 4 MiB, the `FileSize` value itself was unconstrained. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 validates `FileSize` against an upper bound (`MaxFileSize = 100 MiB`) before allocation. As a workaround, restrict access to the provisioner daemon serve endpoint to trusted provisioner daemon service accounts.

Assessing the Risk of CVE-2026-55079

Access Complexity Graph

The exploitability of CVE-2026-55079 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-55079

The exploitability of CVE-2026-55079 is influenced by multiple factors. Security teams should analyze system configurations and apply appropriate countermeasures to mitigate threats.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-55079, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-55079, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2026-55079 has no significant impact on data confidentiality.
Integrity: None
CVE-2026-55079 poses no threat to data integrity.
Availability: High
CVE-2026-55079 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-55079 References

External References

CWE Common Weakness Enumeration

CWE-789

Vulnerable Configurations

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cpe:2.3:a:coder:coder:2.24.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.24.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.24.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.24.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.24.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.24.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.24.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.24.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.24.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.25.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.25.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.25.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.25.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.25.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.25.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.25.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.25.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.26.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.10:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.10:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.11:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.27.11:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.28.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.10:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.10:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.11:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.11:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.12:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.12:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.13:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.13:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.14:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.14:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.15:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.15:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.16:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.29.16:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.1:*:*:*:*:go:*:*
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cpe:2.3:a:coder:coder:2.30.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.30.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.0:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.8:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.9:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.10:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.10:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.11:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.11:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.12:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.12:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.13:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.13:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.14:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.31.14:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.0:-:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.0:-:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.0:rc0:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.0:rc0:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.32.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:-:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:-:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:rc0:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:rc0:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:rc1:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:rc1:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:rc2:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:rc2:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:rc3:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.0:rc3:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.2:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.3:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.4:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.5:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.6:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.33.7:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.34.0:-:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.34.0:-:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.34.0:rc0:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.34.0:rc0:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.34.1:*:*:*:*:go:*:*
cpe:2.3:a:coder:coder:2.34.1:*:*:*:*:go:*:*

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