Vulnerability in Sub2api
CVE-2026-27812
Sub2API is an AI API gateway platform designed to distribute and manage API quotas from AI product subscriptions. A vulnerability in versions prior to 0.1.85 is a Password Reset Poisoning (Host Header / Forwarded Header trust issue), which allows attackers to manipulate the password reset link. Attackers can exploit this flaw to inject their own domain into the password reset link, leading to the potential for account takeover. The vulnerability has been fixed in version v0.1.85. If upgrading is not immediately possible, users can mitigate the vulnerability by disabling the "forgot password" feature until an upgrade to a patched version can be performed. This will prevent attackers from exploiting the vulnerability via the affected endpoint.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Sub2api
- Wei-Shaw Sub2api — versions < 0.1.85
Weakness classification (CWE)
References
- github.com/Wei-Shaw/sub2api/security/advisories/GHSA-vc2q-289v-74g3 (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-27812?
- CVE-2026-27812 is a critical-severity vulnerability in Sub2api, classified under Improper Encoding or Escaping of Output. CVSS score: 9.1/10. Published 2026-02-26.
- How severe is CVE-2026-27812?
- Critical severity. CVSS v3 base score is 9.1 out of 10.