Security readout for executives and security teams
Plain-English summary
Klever-Go nodes before 1.7.17 can be crashed remotely by a very small crafted compressed P2P message that expands into extreme memory use. For validators, this can cause outages; across many nodes, it can affect chain liveness. The source bundle names a fixed version: 1.7.17.
Executive priority
Treat as urgent for Klever validator or infrastructure operators. The issue affects availability, requires no authentication, and can disrupt validator service from a small network payload.
Technical view
The vulnerability is in Batch.Decompress in data/batch/batch.go, reached through topics served by MultiDataInterceptor. A remote unauthenticated peer can trigger multi-gigabyte heap allocation from a sub-50 KiB gossip payload, causing denial of service. CVSS is 8.6, with CWE-409 and CWE-770 mapped.
Likely exposure
Klever blockchain nodes running klever-go versions earlier than 1.7.17 are exposed, especially validators and peers participating in MultiDataInterceptor-served P2P topics.
Exploitation context
The bundle states a single packet can OOM-kill a conventionally provisioned validator. It does not cite KEV listing or active exploitation evidence, so active exploitation is not established here.
Researcher notes
Evidence is limited to the CVE record, CVE List entry, and GitHub advisory reference in the bundle. The named fix is 1.7.17. No exploit code, public exploitation claim, or additional mitigation detail is provided here.
Mitigation direction
- Upgrade klever-go to version 1.7.17 or later.
- Prioritize validators and publicly reachable P2P nodes for rollout.
- Review the GitHub advisory for any updated vendor guidance.
- Monitor node memory, restarts, and validator availability during rollout.
Validation and detection
- Inventory all klever-go nodes and record running versions.
- Confirm no production node remains on a version earlier than 1.7.17.
- Check validator and peer logs for recent OOM kills or unexplained restarts.
- Verify upgraded nodes are running the intended fixed binary.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-409: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-770: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-44697 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H3.94GitHub_MVulnerability scoring details
Base CVSS 3.1 score
8.6HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/klever-io/klever-go/security/advisories/GHSA-87m7-qffr-542vCVE reference, GitHub_M · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.