CVE-2026-31808 Vulnerability Analysis & Exploit Details

CVE-2026-31808
Vulnerability Scoring

5.3
/10
Significant Risk

Security assessments indicate that CVE-2026-31808 presents a notable risk, potentially requiring prompt mitigation.

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: None
    No 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-2026-31808 Details

Status: Analyzed

Last updated: 🕢 18 Mar 2026, 19:48 UTC
Originally published on: 🕘 10 Mar 2026, 21:16 UTC

Time between publication and last update: 7 days

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2026-31808 Vulnerability Summary

CVE-2026-31808: file-type detects the file type of a file, stream, or data. Prior to 21.3.1, a denial of service vulnerability exists in the ASF (WMV/WMA) file type detection parser. When parsing a crafted input where an ASF sub-header has a size field of zero, the parser enters an infinite loop. The payload value becomes negative (-24), causing tokenizer.ignore(payload) to move the read position backwards, so the same sub-header is read repeatedly forever. Any application that uses file-type to detect the type of untrusted/attacker-controlled input is affected. An attacker can stall the Node.js event loop with a 55-byte payload. Fixed in version 21.3.1.

Assessing the Risk of CVE-2026-31808

Access Complexity Graph

The exploitability of CVE-2026-31808 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-2026-31808

With low attack complexity and no required privileges, CVE-2026-31808 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

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-2026-31808, 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-2026-31808, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2026-31808 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2026-31808 poses no threat to data integrity.
  • Availability: Low
    CVE-2026-31808 may slightly degrade system performance without fully affecting service availability.

CVE-2026-31808 References

External References

CWE Common Weakness Enumeration

CWE-835

Vulnerable Configurations

  • cpe:2.3:a:sindresorhus:file-type:13.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:13.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:13.0.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:13.0.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:13.0.2:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:13.0.2:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:13.0.3:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:13.0.3:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:13.1.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:13.1.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:13.1.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:13.1.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:13.1.2:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:13.1.2:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.1.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.1.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.1.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.1.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.1.2:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.1.2:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.1.3:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.1.3:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.1.4:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.1.4:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.2.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.2.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.3.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.3.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.4.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.4.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.5.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.5.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.6.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.6.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.6.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.6.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.6.2:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.6.2:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.7.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.7.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:14.7.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:14.7.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:15.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:15.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:15.0.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:15.0.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.0.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.0.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.1.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.1.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.2.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.2.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.3.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.3.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.4.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.4.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.5.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.5.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.5.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.5.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.5.2:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.5.2:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.5.3:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.5.3:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:16.5.4:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:16.5.4:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.0.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.0.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.0.2:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.0.2:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.1.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.1.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.1.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.1.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.1.2:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.1.2:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.1.3:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.1.3:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.1.4:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.1.4:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.1.5:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.1.5:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:17.1.6:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:17.1.6:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.1.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.1.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.2.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.2.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.2.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.2.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.3.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.3.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.4.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.4.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.5.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.5.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.6.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.6.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:18.7.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:18.7.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.1.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.1.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.1.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.1.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.2.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.2.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.3.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.3.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.4.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.4.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.4.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.4.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.5.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.5.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:19.6.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:19.6.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:20.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:20.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:20.0.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:20.0.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:20.1.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:20.1.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:20.2.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:20.2.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:20.3.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:20.3.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:20.4.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:20.4.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:20.4.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:20.4.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:20.5.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:20.5.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:21.0.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:21.0.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:21.1.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:21.1.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:21.1.1:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:21.1.1:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:21.2.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:21.2.0:*:*:*:*:node.js:*:*
  • cpe:2.3:a:sindresorhus:file-type:21.3.0:*:*:*:*:node.js:*:*
    cpe:2.3:a:sindresorhus:file-type:21.3.0:*:*:*:*:node.js:*:*

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