Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-88858— Server-side expression parser denial of service

Quick assessment

Affected
Grafana Grafana OSS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

拥有 Grafana 中“查看者（Viewer）”角色的用户，可通过提交精心构造的服务器端数学表达式（引发不受控的递归），导致服务器崩溃。若用户具备配置告警规则的权限，则可使服务中断在服务器重启后持续存在。

CVSS 6.5 · Medium

Affected Version Matrix 14

VendorProduct Version RangeStatus
Grafana Grafana Enterprise 7.4.0≤ 11.6.16 affected
12.0.0≤ 12.2.10 affected
12.3.0≤ 12.3.11 affected
12.4.0≤ 12.4.13 affected
13.0.0≤ 13.0.11 affected
13.1.0≤ 13.1.8 affected
13.2.0≤ 13.2.4 affected
Grafana Grafana OSS 7.4.0≤ 11.6.16 affected
12.0.0≤ 12.2.10 affected
12.3.0≤ 12.3.11 affected
12.4.0≤ 12.4.13 affected
13.0.0≤ 13.0.11 affected
13.1.0≤ 13.1.8 affected
13.2.0≤ 13.2.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-88858

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Server-side expression parser denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Grafana Grafana OSS 7.4.0 ~ 11.6.16 -
Grafana Grafana Enterprise 7.4.0 ~ 11.6.16 -

II. Public POCs for CVE-2026-88858

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-88858

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-88858 (1)

Same Patch Batch · Grafana · 2026-10-28 · 5 CVEs total

CVE-2026-103506 8.9 HIGH SSO settings authorization bypass
CVE-2026-100105 7.7 HIGH Alerting contact point authorization bypass via schema downgrade
CVE-2026-88967 7.7 HIGH Azure Monitor access token disclosure via SSRF
CVE-2026-79656 6.0 MEDIUM OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and G

IV. Related Vulnerabilities

Same product: Grafana OSS
Same vendor: Grafana
Same weakness: CWE-674