PT-2026-26315 · Grafana+1 · Grafana Tempo+1

William_Goodfellow · Published 2026-03-16 · Updated 2026-06-25 · CVE-2026-28377

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions Grafana Tempo versions prior to 2.10.3

Description A flaw exists in Grafana Tempo that results in the exposure of the S3 SSE-C encryption key in plaintext. This exposure occurs through the /status/config API endpoint. Successful exploitation could allow unauthorized users to obtain the key used to encrypt trace data stored in S3.

Recommendations Update to version 2.10.3 or later.

Exploit

Fix

Inadequate Encryption Strength

Cleartext Storage of Sensitive Information

Weakness Enumeration

CWE-326

CWE-312

Related Identifiers

BDU:2026-06943

CLEANSTART-2026-KC83705

CLEANSTART-2026-YF74364

CLEANSTART-2026-ZI02697

CVE-2026-28377

GHSA-FFQX-Q65F-36JF

GO-2026-5359

OPENSUSE-SU-2026:10390-1

Affected Products

Grafana Tempo

Red Os

References · 76

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28377.json · Exploit
• https://osv.dev/vulnerability/CLEANSTART-2026-KC83705 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-11065 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-34986 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-33810 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-22868 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-24051 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-32280 · Security Note
• https://grafana.com/security/security-advisories/cve-2026-28377 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-32282 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-33186 · Security Note
• https://osv.dev/vulnerability/CLEANSTART-2026-ZI02697 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-32281 · Security Note
• https://osv.dev/vulnerability/CVE-2026-28377 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-61726 · Security Note