Medium severity · published Sep 10, 2026
CVE-2026-88897
Flextype CMS through 1.0.0-alpha.3 API Token Exposure via Query String
5.9
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
flextype · flextype
through 1.0.0-alpha.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-88897
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-88897
github.com
https://github.com/flextype/flextype
github.com
https://github.com/flextype/flextype/blob/v1.0.0-alpha.3/src/flextype/core/Endpoints/Api.php
github.com
https://github.com/flextype/flextype/issues/598
www.vulncheck.com
https://www.vulncheck.com/advisories/flextype-cms-through-1.0.0-alpha.3-api-token-exposure-via-query-string
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