PT-2026-26315 · Grafana · Grafana Tempo

William_Goodfellow · Published 2026-03-16 · Updated 2026-04-15 · CVE-2026-28377

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Cleartext Storage of Sensitive Information

Inadequate Encryption Strength

Weakness Enumeration

CWE-312

CWE-326

Related Identifiers

BDU:2026-06943

CLEANSTART-2026-KC83705

CVE-2026-28377

GHSA-FFQX-Q65F-36JF

OPENSUSE-SU-2026:10390-1

Affected Products

Grafana Tempo

References · 57

• https://nvd.nist.gov/vuln/detail/CVE-2026-32281 · Security Note
• https://grafana.com/security/security-advisories/cve-2026-28377 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34986 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-68119 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-32283 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-32282 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-32289 · Security Note
• https://bdu.fstec.ru/vul/2026-06943 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-28377 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-61726 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-11065 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-24051 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10390-1 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-ffqx-q65f-36jf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-61728 · Security Note