# CVE-2026-82827: Hitachi Coding Software Suite hardcoded JWT key

Source: https://junglewise.ai/threats/cve-2026-82827-hitachi-coding-software-suite-contains-a-vulnerability-related-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-01. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-82827 · Severity: critical · CVSS 9.8 · Published 2026-10-01

Hitachi Coding Software Suite, a software development platform, contains a hardcoded cryptographic key used to sign authentication tokens (JWTs). An attacker who discovers this key can forge valid authentication tokens and gain unauthorized access to administrative functions, potentially compromising the entire platform and hosted applications.

Technologies: [Hitachi Coding Software Suite](https://junglewise.ai/threats/technologies/coding-software-suite). Vendors: [Hitachi](https://junglewise.ai/threats/vendors/hitachi).

## Quick answers

**Is CVE-2026-82827 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82827 being exploited in the wild.

**How severe is CVE-2026-82827?** Critical severity, with a CVSS score of 9.8, published 1 October 2026.

**Which products and versions are affected?** Hitachi Coding Software Suite through 3.3.0.

**Is there a fix for CVE-2026-82827?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-82827 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-82827?** Check whether you run Hitachi Coding Software Suite 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.

## Technical details

A hardcoded JWT signing secret is embedded in Hitachi Coding Software Suite, allowing attackers to forge valid Bearer tokens without authentication. The vulnerability requires network access to the affected service and can be exploited to bypass authentication and access administrative functions. No authentication or user interaction is required once the hardcoded key is obtained.

## Affected products

- Hitachi Coding Software Suite through 3.3.0

## Timeline

- 2026-10-01: disclosed

## References

- [https://www.hitachi-ies.com/common/documents/vulnerability/hcss/Hitachi_Coding_Software_Suite_Public_statement_20260925_EN.pdf](https://www.hitachi-ies.com/common/documents/vulnerability/hcss/Hitachi_Coding_Software_Suite_Public_statement_20260925_EN.pdf)

## Related threats

- [Hitachi Coding Software Suite hidden functionality authentication bypass](https://junglewise.ai/threats/cve-2026-82829-hitachi-coding-software-suite-contains-a-vulnerability-related-to)
- [Hitachi Coding Software Suite incorrect authorization](https://junglewise.ai/threats/cve-2026-82828-hitachi-coding-software-suite-contains-an-incorrect-authorization)
- [Hitachi Coding Software Suite cleartext transmission of credentials](https://junglewise.ai/threats/cve-2026-82826-hitachi-coding-software-suite-contains-a-vulnerability-related-to)
- [Hitachi Coding Software Suite missing authentication in critical API](https://junglewise.ai/threats/cve-2026-82825-hitachi-coding-software-suite-contains-a-vulnerability-related-to)
- [Hitachi Coding Software Suite path traversal](https://junglewise.ai/threats/cve-2026-82824-hitachi-coding-software-suite-contains-a-vulnerability-related-to)