CVE-2026-2964
Published: 23 February 2026
Summary
CVE-2026-2964 is a low-severity Code Injection (CWE-94) vulnerability in Higuma Webaudiorecorder.Js. Its CVSS base score is 2.3 (Low).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 28.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SA-22 (Unsupported System Components) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-2964 is a prototype pollution vulnerability affecting the higuma web-audio-recorder-js library in versions 0.1 and 0.1.1. The issue resides in the extend function within lib/WebAudioRecorder.js, part of the dynamic config handling component, which allows improperly controlled modification of object prototype attributes (CWE-94, CWE-1321). This flaw enables remote attackers to manipulate prototype attributes, with a CVSS v3.1 base score of 5.0 (AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L).
The vulnerability can be exploited remotely by attackers with low privileges over the network, though it requires high attack complexity and no user interaction. Successful exploitation grants limited impact, including low confidentiality, integrity, and availability effects, such as partial data exposure, minor modifications, or slight service disruptions.
VulDB advisories, referenced at vuldb.com/?ctiid.347331, vuldb.com/?id.347331, and related submission pages, detail the issue but note that the vendor was contacted early without response, implying no official patch or mitigation guidance is available. Security practitioners should avoid using the affected library versions and monitor for updates.
Notably, a public exploit exists and might be used in targeted attacks, though exploitability is considered difficult due to its complexity. The vulnerability was published on 2026-02-23.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-7598
Vulnerability details
A vulnerability was identified in higuma web-audio-recorder-js 0.1/0.1.1. Impacted is the function extend in the library lib/WebAudioRecorder.js of the component Dynamic Config Handling. Such manipulation leads to improperly controlled modification of object prototype attributes. It is possible to launch the…
more
attack remotely. Attacks of this nature are highly complex. The exploitability is considered difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Prototype pollution in JS library enables remote exploitation of public-facing apps (T1190) and JS command/script execution via object manipulation (T1059.007).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly blocks the prototype-pollution vector by validating or sanitizing untrusted configuration objects passed to the extend function in WebAudioRecorder.js.
Requires replacement or removal of the unsupported higuma library versions 0.1/0.1.1 that contain the unpatched flaw.
Enables integrity verification of the client-side JavaScript library to detect unauthorized modifications or known-vulnerable code before execution.