CVE-2026-77939
7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
Flextype CMS through v1.0.0-dev contains an expression language injection vulnerability that allows authenticated attackers with a valid API token to read arbitrary files by passing unsanitized user-supplied input to the Symfony ExpressionLanguage engine via the POST /api/v1/query endpoint. Attackers can leverage exposed application objects including filesystem() and serializers() within the evaluation scope to read arbitrary server files and achieve conditional remote code execution if a PHP file can be placed on disk through a secondary vector.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| flextype | flextype | 0 <= 1.0.0-dev | affected |
| flextype | flextype | 0 <= aea4ead8c449ea5517ed53b6dcbd28b0a528ad9d | affected |
Weaknesses
- CWE-94: Improper Control of Generation of Code ('Code Injection')
- CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
References
- https://github.com/flextype/flextype/issues/595
- https://www.vulncheck.com/advisories/flextype-cms-dev-rce-via-post-api-v1-query-endpoint
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