CVE-2026-82409

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, indexer/common.go serializedDataForUpdateAccounts places the attacker-controlled acc.Name value into an Elasticsearch _bulk JSON and NDJSON request without escaping it. The SetAccountName transaction accepts valid UTF-8 account names containing quotes, backslashes, and newlines, and the resulting name is stored in consensus account state. When an indexer processes the account, those characters can break the JSON string, reject a bulk batch, or inject additional bulk actions that create, overwrite, or delete documents in indices writable by the indexer. The persistent state value is replayed by new or historical indexers, and direct access to the indexing host or Elasticsearch port is not required. This issue is fixed in version 1.7.20.

CVSS

No CVSS.

References

Link	Resource
https://github.com/klever-io/klever-go/commit/f00366768b24be18fa7ae9de2e1905caa8b350af
https://github.com/klever-io/klever-go/commit/f54ea730cc80a3ba4f906586a7d221b281548190
https://github.com/klever-io/klever-go/releases/tag/v1.7.20
https://github.com/klever-io/klever-go/security/advisories/GHSA-7c7c-373r-gfjj
https://github.com/klever-io/klever-go/security/advisories/GHSA-7c7c-373r-gfjj

Configurations

No configuration.

History

24 Sep 2026, 16:17

Type	Values Removed	Values Added
References	~~() https://github.com/klever-io/klever-go/security/advisories/GHSA-7c7c-373r-gfjj -~~	() https://github.com/klever-io/klever-go/security/advisories/GHSA-7c7c-373r-gfjj -

23 Sep 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-23 20:17

Updated : 2026-09-24 16:17

NVD link : CVE-2026-82409

Mitre link : CVE-2026-82409

CVE.ORG link : CVE-2026-82409

JSON object : View

Products Affected

No product.

CWE

CWE-116

Improper Encoding or Escaping of Output

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