CVE-2025-8396

medium

Description

Insufficiently specific bounds checking on authorization header could lead to denial of service in the Temporal server on all platforms due to excessive memory allocation.This issue affects all platforms and versions of OSS Server prior to 1.26.3, 1.27.3, and 1.28.1 (i.e., fixed in 1.26.3, 1.27.3, and 1.28.1 and later). Temporal Cloud services are not impacted.

References

https://github.com/temporalio/temporal/releases/tag/v1.28.1

https://github.com/temporalio/temporal/releases/tag/v1.27.3

https://github.com/temporalio/temporal/releases/tag/v1.26.3

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-29200

Details

Source: Mitre, NVD

Published: 2025-09-15

Updated: 2026-04-15

Named Vulnerability: GO-2025-3953Named Vulnerability: GHSA-p768-c3pr-6459

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Severity: Medium

EPSS

EPSS: 0.00388