# CVE-2026-81686: openssl_encrypt D-Bus Properties.Set authorization bypass

Source: https://junglewise.ai/threats/cve-2026-81686-openssl-encrypt-d-bus-properties-set-authorization-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-27. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-81686 · Severity: medium · CVSS 6.2 · Published 2026-08-27

openssl_encrypt is a cryptography service library that includes an optional D-Bus daemon for managing encryption operations. A local attacker can bypass authorization checks on the D-Bus service and modify critical configuration parameters without permission, causing the service to reject all encryption requests or become unstable. This results in a persistent denial of service affecting any applications relying on the crypto service.

Technologies: [Jahlives Openssl Encrypt](https://junglewise.ai/threats/technologies/openssl-encrypt), [openssl-encrypt (PyPI)](https://junglewise.ai/threats/technologies/pypi-openssl-encrypt). Vendors: [Jahlives](https://junglewise.ai/threats/vendors/jahlives), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-81686 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-81686 being exploited in the wild.

**How severe is CVE-2026-81686?** Medium severity, with a CVSS score of 6.2, published 27 August 2026.

**Which products and versions are affected?** Jahlives Openssl Encrypt 1.4.x before 1.4.9; openssl-encrypt (PyPI) ECOSYSTEM:introduced=0,fixed=1.4.9.

**Is there a fix for CVE-2026-81686?** Yes. openssl-encrypt (PyPI): upgrade to 1.4.9 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-81686 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-81686?** Check whether you run Jahlives Openssl Encrypt or openssl-encrypt (PyPI) 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

- openssl-encrypt (PyPI): upgrade to 1.4.9 or later

  ```sh
  pip install "openssl-encrypt>=1.4.9"
  ```


## Technical details

The D-Bus Properties.Set method in openssl_encrypt 1.4.x lacks both polkit authorization checks (CWE-862) and input validation (CWE-20). An unauthenticated local user on the system bus can invoke Set to modify MaxConcurrentOperations (setting it to 0, negative values, or excessive values) or unbounded DefaultTimeout parameters. Setting MaxConcurrentOperations to 0 or negative values causes the concurrency gate to permanently refuse all operations; setting it to very large values removes rate limiting. The vulnerability affects only the 1.4.x line; the D-Bus service was removed in 1.5.x. The fix in version 1.4.9 adds polkit authorization under the dedicated ch.rmrf.openssl_encrypt.configure action and validates parameters against safe bounds, rejecting invalid values.

## Affected products

- jahlives openssl_encrypt 1.4.x before 1.4.9

## Identifiers

- CVE-2026-81686
- PYSEC-2026-3794

## Timeline

- 2026-08-27: disclosed
- 2026-08-12: patched: Version 1.4.9 released with fix

## References

- [https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-7fhx-8rmv-qjj3](https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-7fhx-8rmv-qjj3)
- [https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-d-bus-properties-authorization-bypass](https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-d-bus-properties-authorization-bypass)

## Related threats

- [openssl_encrypt KDF cost parameter validation bypass](https://junglewise.ai/threats/cve-2026-81721-openssl-encrypt-kdf-cost-parameter-validation-bypass)
- [openssl_encrypt memory exhaustion in identity file protection block](https://junglewise.ai/threats/cve-2026-81720-openssl-encrypt-memory-exhaustion-in-identity-file-protection)
- [openssl_encrypt arbitrary code execution via plugin signature bypass](https://junglewise.ai/threats/cve-2026-81719-openssl-encrypt-arbitrary-code-execution-via-plugin-signature)
- [openssl_encrypt weak PBKDF2 parameters in keyfile encryption](https://junglewise.ai/threats/cve-2026-81718-openssl-encrypt-weak-pbkdf2-parameters-in-keyfile-encryption)
- [openssl_encrypt USB drive integrity bypass with fixed KDF salt](https://junglewise.ai/threats/cve-2026-81717-openssl-encrypt-usb-drive-integrity-bypass-with-fixed-kdf-salt)