Memory exhaustion in Grafana Git Sync via a malicious Git server
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 1 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-770.
Summary
Grafana OSS and Grafana Enterprise from 13.0.0 before 13.0.11, from 13.1.0 before 13.1.8, and from 13.2.0 before 13.2.4 are affected, as is the Nanogit package before 1.7.0. A Git server that Grafana's Git Sync provisioning is configured to use can return oversized or highly compressed responses, and Grafana allocates memory for them without limits (CWE-770), which exhausts its memory. Exploitation requires an administrator to have configured Git Sync with that server.
Written with Claude Haiku 5.5 from the sources below · 2026-10-31
Description from the CNA
A Git server that Grafana's Git Sync (provisioning) is configured to use can exhaust Grafana's memory by returning oversized or highly compressed responses (uncontrolled resource consumption). Exploitation requires an administrator to have configured Git Sync with that server.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Grafana | Nanogit | before 1.7.0 | 1.7.0 | Patch available | CNA |
| Grafana | Grafana OSS | 13.0.0 to before 13.0.11; 13.1.0 to before 13.1.8; 13.2.0 to before 13.2.4 | 13.0.11, 13.1.8, 13.2.4 | Patch available | CNA |
| Grafana | Grafana Enterprise | 13.0.0 to before 13.0.11; 13.1.0 to before 13.1.8; 13.2.0 to before 13.2.4 | 13.0.11, 13.1.8, 13.2.4 | Patch available | CNA |
- Nanogit VendorGrafana Affected before 1.7.0 Fixed in 1.7.0 Patch available CNA
- Grafana OSS VendorGrafana Affected 13.0.0 to before 13.0.11; 13.1.0 to before 13.1.8; 13.2.0 to before 13.2.4 Fixed in 13.0.11, 13.1.8, 13.2.4 Patch available CNA
- Grafana Enterprise VendorGrafana Affected 13.0.0 to before 13.0.11; 13.1.0 to before 13.1.8; 13.2.0 to before 13.2.4 Fixed in 13.0.11, 13.1.8, 13.2.4 Patch available CNA
Remediation
Upgrade Nanogit to 1.7.0, Grafana OSS and Grafana Enterprise to 13.0.11, 13.1.8 or 13.2.4, matching the release line in use. Red Hat fixes its Red Hat Hardened Images in RHSA-2026:76677, RHSA-2026:85544 and RHSA-2026:87077. Red Hat Ceph Storage 8 and Red Hat Ceph Storage 9 are affected, and Red Hat lists no available fix plan for them.
Written with Claude Haiku 5.5 from the sources below · 2026-10-31
- Fix · CNA Nanogit (Grafana) Fixed in 1.7.0
- Fix · CNA Grafana OSS (Grafana) Fixed in 13.0.11, 13.1.8, 13.2.4
- Fix · CNA Grafana Enterprise (Grafana) Fixed in 13.0.11, 13.1.8, 13.2.4
Red Hat 3 advisories
- RHSA-2026:87077 Released 2026-10-21 · Red Hat rating ImportantRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images grafana13.1-13.1.8-0.3.hum1@aarch64, grafana13.1-13.1.8-0.3.hum1@s390x, grafana13.1-13.1.8-0.3.hum1@src +1
- RHSA-2026:85544 Released 2026-10-19 · Red Hat rating ModerateRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images grafana13.2-13.2.4-0.1.hum1@aarch64, grafana13.2-13.2.4-0.1.hum1@s390x, grafana13.2-13.2.4-0.1.hum1@src +1
- RHSA-2026:76677 Released 2026-10-06 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images grafana12.4-12.4.12-0.4.hum1@aarch64, grafana12.4-12.4.12-0.4.hum1@src, grafana12.4-12.4.12-0.4.hum1@x86_64
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ceph Storage 8 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 9 | Affected | No fix yet: Fix deferred |
| Red Hat Hardened Images | Fixed | RHSA-2026:76677, RHSA-2026:85544, RHSA-2026:87077 |
Not affected: 7 products
- Multicluster Global Hub
- Red Hat Advanced Cluster Management for Kubernetes 2
- Red Hat Ceph Storage 7
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
Timeline
- 2026-10-13 Threatist record created from CVE-2026-95502
- 2026-10-13 Alias added: GHSA-w2wx-887f-65f8
- 2026-10-13 CISA SSVC decision points changed
- 2026-10-15 Fix available: RHSA-2026:76677 · Red Hat
- 2026-10-16 Fix available: Red Hat Hardened Images · Red Hat
- 2026-10-16 CVSS score added · Red Hat
- 2026-10-20 Fix available: RHSA-2026:85544 · Red Hat
- 2026-10-20 Affected versions changed · Red Hat
- 2026-10-22 Fix available: RHSA-2026:87077 · Red Hat
- 2026-10-22 Affected versions changed · Red Hat
- 2026-10-29 Affected versions changed · Red Hat
- 2026-10-31 Affected versions changed · Red Hat
References
More Grafana vulnerabilities
- TI-2021-16611 Snapshot authentication bypass in grafana KEVCVSS 3.1CRITICAL 9.8
- TI-2021-19604 Grafana path traversal KEVCVSS 3.1HIGH 7.5
- TI-2024-08600 Grafana SQL Expressions allow for remote code execution CVSS 4.0CRITICAL 9.4
- TI-2023-02931 Authentication bypass by spoofing in Grafana CVSS 3.1CRITICAL 9.8
- TI-2020-10491 The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control… CVSS 3.1HIGH 8.2
- TI-2025-03662 Open redirect in Grafana CVSS 3.1HIGH 7.6
Sources
- CVE-2026-95502 · CVE Program
- CVE-2026-95502 · NVD
- FIRST EPSS
- GHSA-w2wx-887f-65f8 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-95502 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences