CVE-2026-101088

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Source
https://cve.org/CVERecord?id=CVE-2026-101088
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101088.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-101088
Aliases
  • GHSA-jx78-55p5-rwv5
Published
2026-09-27T20:49:59Z
Modified
2026-09-29T03:30:13Z
Severity
  • 6.0 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Nezha before 2.3.1 Denial of Service via Concurrent Server Delete
Details

Nezha is a server and website monitoring tool. In versions >= 2.2.11 and < 2.3.1, the service sentinel worker (service/singleton/servicesentinel.go) contains an incomplete fix for a previously reported nil dereference denial of service (GHSA-qjpp-gffx-2wm9). The 2026-07-21 fix re-validated the service lifecycle under serviceResponseDataStoreLock but reused an already-captured, now stale reporter pointer and never re-validated the server, and that lock does not guard ServerShared. An authenticated user with the member role who owns an agent can issue a concurrent server delete (POST /api/v1/batch-delete/server) for their own server to win the race window, causing the worker to dereference a missing entry in the server list snapshot. Because the sentinel workers and the gRPC server have no recover()/recovery interceptor, the resulting panic is unrecovered and crashes the entire instance. This is fixed in version 2.3.1.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-367"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101088.json"
}
References

Affected packages

Git / github.com/nezhahq/nezha

Affected ranges

Type
GIT
Repo
https://github.com/nezhahq/nezha
Events
Introduced
5d7e8b58af927abd9a1e7381c1269c9f2256eae1
Fixed
a9d14a0dfa1e0d001b0b237b6afe91b07c67e7a5
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "2.2.11"
        },
        {
            "fixed":  "2.3.1"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v2.*
v2.2.11
v2.3.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101088.json"