# CVE-2025-8396: GO-2025-3953 - Temporal OSS Server Vulnerable to Allocation of Resources Without Limits or Throttling in go.temporal.io/server

Source: https://junglewise.ai/threats/cve-2025-8396-temporal-oss-server-vulnerable-to-allocation-of-resources-without  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-09-17  
License: CC BY 4.0 with a link back

CVE-2025-8396 · Severity: medium · CVSS 4 · Published 2025-09-17

Temporal OSS Server Vulnerable to Allocation of Resources Without Limits or Throttling in go.temporal.io/server

Technologies: [go.temporal.io/server (Go)](https://junglewise.ai/threats/technologies/go-temporal-io-server). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2025-8396 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-8396 being exploited in the wild.

**How severe is CVE-2025-8396?** Medium severity, with a CVSS score of 4, published 17 September 2025.

**Which products and versions are affected?** go.temporal.io/server (Go) SEMVER:introduced=0,fixed=1.26.3, SEMVER:introduced=0,fixed=1.26.3,introduced=1.27.0-126.0,fixed=1.27.3,introduced=1.28.0-129.0,fixed=1.28.1.

**Is there a fix for CVE-2025-8396?** Yes. go.temporal.io/server (Go): upgrade to 1.26.3, 1.28.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-8396?** Check whether you run go.temporal.io/server (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- go.temporal.io/server (Go): upgrade to 1.26.3, 1.28.1 or later

  ```sh
  go get go.temporal.io/server@v1.28.1
  ```


## Affected products

- go.temporal.io/server (Go) SEMVER:introduced=0,fixed=1.26.3, SEMVER:introduced=0,fixed=1.26.3,introduced=1.27.0-126.0,fixed=1.27.3,introduced=1.28.0-129.0,fixed=1.28.1

## Identifiers

- CVE-2025-8396
- GHSA-p768-c3pr-6459
- GO-2025-3953

## Related threats

- [Temporal Server missing authentication in gRPC streaming interceptor](https://junglewise.ai/threats/cve-2026-5724-temporal-server-missing-authentication-in-grpc-streaming)
- [Temporal Server authorization bypass in batch workflow operations](https://junglewise.ai/threats/cve-2026-5199-temporal-server-authorization-bypass-in-batch-workflow-operations)
- [GO-2026-4273 - Temporal has an Incorrect Authorization vulnerability in go.temporal.io/server](https://junglewise.ai/threats/cve-2025-14987-temporal-has-an-incorrect-authorization-vulnerability)
- [Temporal has a namespace policy bypass allowing requests to be authorized for incorrect contexts](https://junglewise.ai/threats/cve-2025-14986-temporal-has-a-namespace-policy-bypass-allowing-requests-to-be)
- [Temporal Server vulnerable to Incorrect Authorization and Insecure Default Initialization of Resource](https://junglewise.ai/threats/cve-2023-3485-temporal-server-vulnerable-to-incorrect-authorization-and-insecure)