CVE-2026-52880

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Source
https://cve.org/CVERecord?id=CVE-2026-52880
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52880.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-52880
Aliases
Downstream
Related
Published
2026-08-07T22:53:41.291Z
Modified
2026-08-09T03:46:45.112698278Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Klever-Go: REST API slow-header connection exhaustion via Gin Engine.Run
Details

Klever-Go is the Go implementation of the Klever blockchain protocol. Versions from 1.7.14 through 1.7.17 are vulnerable to a remotely triggerable denial of service. Both REST APIs are started with the Gin Engine.Run convenience method, which serves requests through Go's default HTTP server with no ReadHeaderTimeout, ReadTimeout, or MaxHeaderBytes configured. As a result, incoming connections that never complete their request headers are held open indefinitely. When a REST listener is reachable beyond localhost through the documented all-interface bind or a Docker port-publish deployment, a single unauthenticated client can open many slow-header connections and hold them open until server file descriptors are exhausted, preventing the API from accepting new connections. This renders the REST API unavailable to legitimate clients. This issue is fixed in version 1.7.18.

Database specific 
{
    "cwe_ids": [
        "CWE-400",
        "CWE-770"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52880.json"
}
References

Affected packages

Git / github.com/klever-io/klever-go

Affected ranges

Type
GIT
Repo
https://github.com/klever-io/klever-go
Events
Introduced
22769b30dd782ca7925b356c18471b7bd70ed437
Fixed
785b77ccb27162506c888cb62657cd7117d23126
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "1.7.14"
        },
        {
            "fixed": "1.7.18"
        }
    ]
}

Affected versions

v1.*
v1.7.14
v1.7.15
v1.7.16
v1.7.17

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52880.json"