CVE-2026-82409Klever-Go: Elasticsearch bulk / painless injection via on-chain account name -> explorer/indexer data forgery
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 8.4 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:L
- Weakness (CWE)
- CWE-116
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
klever-io klever-go klever_io:klever_go (from the name) | before 1.7.20 | CNA record |
References
- https://github.com/klever-io/klever-go/security/advisories/GHSA-7c7c-373r-gfjjx-refsource-confirm
- https://github.com/klever-io/klever-go/commit/f00366768b24be18fa7ae9de2e1905caa8b350afx-refsource-misc
- https://github.com/klever-io/klever-go/commit/f54ea730cc80a3ba4f906586a7d221b281548190x-refsource-misc
- https://github.com/klever-io/klever-go/releases/tag/v1.7.20x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.