CVE-2026-2681
- Source
- https://cve.org/CVERecord?id=CVE-2026-2681
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2681.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-2681
- Published
- 2026-02-19T06:58:47Z
- Modified
- 2026-10-28T02:30:51Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- Github.com/supranational/blst: blst cryptographic library: denial of service via out-of-bounds stack write in key generation
- Details
-
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.
- Database specific
{ "cna_assigner": "fedora", "cwe_ids": [ "CWE-787" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2681.json" }- References
Affected packages
Git / github.com/supranational/blst
Affected ranges
- Type
- GIT
- Repo
- https://github.com/supranational/blst
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast Affected
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "last_affected": "0.3.16" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" } ] }