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CVE-2026-2681 Detail

Description

A flaw was found in the blst cryptographic library. This out-of-bounds stack write vulnerability, specifically in the blst_sha256_bcopy assembly routine, occurs due to a missing zero-length guard. A remote attacker can exploit this by providing a zero-length salt parameter to key generation functions, such as blst_keygen_v5(), if the application exposes this functionality. Successful exploitation leads to memory corruption and immediate process termination, resulting in a denial-of-service (DoS) condition.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://access.redhat.com/security/cve/CVE-2026-2681 Fedora Project
https://bugzilla.redhat.com/show_bug.cgi?id=2440580 Fedora Project

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write Fedora Project  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-2681
NVD Published Date:
02/19/2026
NVD Last Modified:
02/19/2026
Source:
Fedora Project