Vulnerability in Flextype
CVE-2026-88897
Flextype CMS through 1.0.0-alpha.3 accepts API authentication credentials through URL query string parameters in REST API routes. Attackers with access to web server, proxy, or monitoring logs can recover valid API token pairs that grant full API access.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/flextype/flextype/issues/598 (issue-tracking)
- github.com/flextype/flextype (product)
- github.com/flextype/flextype/blob/v1.0.0-alpha.3/src/flextype/core/Endpoints/Ap… (technical-description)
- www.vulncheck.com/advisories/flextype-cms-through-1.0.0-alpha.3-api-token-expos… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-88897?
- CVE-2026-88897 is a medium-severity vulnerability in Flextype, classified under CWE-598. CVSS score: 5.9/10. Published 2026-09-10.
- How severe is CVE-2026-88897?
- Medium severity. CVSS v3 base score is 5.9 out of 10.