CVE-2026-88858
Server-side expression parser denial of service
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What happened?
A user with the Viewer role in Grafana can crash the server by submitting a crafted server-side math expression (uncontrolled recursion). A user with permission to provision alert rules can make the outage persist across restarts.
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| Grafana OSSGrafana | affected: 7.4.0 to ≤ 11.6.16; affected: 12.0.0 to ≤ 12.2.10; affected: 12.3.0 to ≤ 12.3.11; affected: 12.4.0 to ≤ 12.4.13; affected: 13.0.0 to ≤ 13.0.11; affected: 13.1.0 to ≤ 13.1.8; affected: 13.2.0 to ≤ 13.2.4 | See vendor advisory |
| Grafana EnterpriseGrafana | affected: 7.4.0 to ≤ 11.6.16; affected: 12.0.0 to ≤ 12.2.10; affected: 12.3.0 to ≤ 12.3.11; affected: 12.4.0 to ≤ 12.4.13; affected: 13.0.0 to ≤ 13.0.11; affected: 13.1.0 to ≤ 13.1.8; affected: 13.2.0 to ≤ 13.2.4 | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.