VulnerabilityPublished 18 Mar 2026

CVE-2026-32256: Borewit music-metadata · Infinite Loop

Affects Borewit music-metadataSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 11.12.3 soon.

Data as of 31 Oct 2026, 08:20 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 11.12.3

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Borewit music-metadata to 11.12.3.

Affected software

Product	Affected	Fixed in
Borewitmusic-metadata	Affected <11.12.3	Fixed in 11.12.3
npmmusic-metadata`pkg:npm/music-metadata`Other threats	Affected <11.12.3	Fixed in 11.12.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2026-32256, organizations should immediately upgrade the Borewit music-metadata library to version 11.12.3 or later, where the infinite loop issue is fixed. For environments where immediate upgrading is not feasible, implement input validation to detect and reject ASF media files with suspicious or zero objectSize sub-objects before parsing. Employ resource usage monitoring and timeouts on media parsing operations to detect and terminate processes that hang or consume excessive CPU cycles. Additionally, sandbox or isolate media parsing components to limit the impact of potential denial-of-service conditions. Regularly audit and update third-party libraries to ensure known vulnerabilities are patched promptly. Finally, consider implementing network-level protections such as rate limiting and filtering to reduce exposure to malicious media file submissions.

Description

music-metadata is a metadata parser for audio and video media files. Prior to version 11.12.3, music-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`. Version 11.12.3 fixes the issue.

Impact

The primary impact of CVE-2026-32256 is a denial-of-service condition caused by an infinite loop in the ASF parser of the music-metadata library. Organizations that utilize this library in media processing applications, streaming platforms, content management systems, or any service that parses ASF files may experience application hangs or crashes when processing maliciously crafted media files. This can lead to service outages, degraded user experience, and potential cascading failures in dependent systems. Since the vulnerability can be triggered remotely without authentication or user interaction, attackers can exploit it to disrupt services at scale. This is particularly critical for cloud services, media hosting providers, and any enterprise relying on automated media ingestion pipelines. While confidentiality and integrity are not directly affected, the availability impact can result in operational downtime and increased incident response costs.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Mar 2026, 14:27 UTC

WeaknessesCWE-835

Technical details

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