CVE-2026-124959
The loadIndex function in nmslib hnswlib and Spotify Voyager does not verify that the element count in a serialized HNSW index is within the stored capacity used to allocate the heap buffer. An attacker can supply a crafted index file with an element count greater than the stored capacity, causing the loader to write beyond the allocated buffer and potentially crash the application when it loads the file.
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The sources do not list affected products or versions for this vulnerability yet.
No weakness classification (CWE) has been assigned yet.
Published
First publication at the source
Collected
First seen by Baba Yaga Security