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CVE-2026-33151 is a low severity vulnerability with a CVSS score of 0.0. No known exploits currently, and patches are available.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
A specially crafted Socket.IO packet can make the server wait for a large number of binary attachments and buffer them, which can be exploited to make the server run out of memory.
| Version range | Used by | Fixed version |
|------------------|--------------------------------------------|---------------|
| >=4.0.0 <4.2.6 | [email protected] and [email protected] | 4.2.6 |
| >=3.4.0 <3.4.4 | [email protected] | 3.4.4 |
| <3.3.5 | [email protected] | 3.3.5 |
There is no known workaround except upgrading to a safe version.
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