CVE-2026-55500: Information Disclosure (CVSS 9.9)

Description

9Router is an AI router & token saver. Prior to 0.4.80, the /api/settings/database endpoint allows full database export (containing all credentials, API keys, OAuth tokens, and settings) and full database import (complete overwrite) without any authentication requirement beyond the ALWAYS_PROTECTED middleware check, which only validates JWT or CLI token. This issue is fixed in version 0.4.80.

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CVSS v3.1 Score

9.9

CRITICAL

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

EPSS — Exploit Prediction

0.0069

Probability of exploitation

0.49%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-200 CWE-200

References

Other References

https://github.com/decolua/9router/commit/0c7c9de00ae3ab81d6580e3cc368483c4c03f6fd https://github.com/decolua/9router/releases/tag/v0.4.80 https://github.com/decolua/9router/security/advisories/GHSA-qvfm-67h2-2qfx https://github.com/decolua/9router/security/advisories/GHSA-qvfm-67h2-2qfx

Frequently Asked Questions

What is CVE-2026-55500? +

9Router is an AI router & token saver. Prior to 0.4.80, the /api/settings/database endpoint allows full database export (containing all credentials, API keys, OAuth tokens, and settings) and full database import (complete overwrite) without any authentication requirement beyond the ALWAYS_PROTECTED middleware check, which only validates JWT or CLI token. This issue is fixed in version 0.4.80. It has a CVSS v3.1 base score of 9.9 (CRITICAL).

How severe is CVE-2026-55500? +

CVE-2026-55500 has a CVSS v3.1 score of 9.9 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0069, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-55500? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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