CVE-2026-52762
YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki Bazar contains a stored Server-Side Template Injection (SSTI) vulnerability in the semantic template feature that can be escalated to confirmed Remote Code Execution (RCE). An authenticated administrator can place arbitrary Twig expressions into the Semantic template (Twig) field (bn_sem_template), and that content is later executed server-side when public semantic endpoints are requested. This issue has been patched in version 4.6.6.
Scoring
- Severity
- HIGH
- CVSS base score
- 7.1
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
- EPSS probability
- 0.45%
- CWE
- CWE-1336
- Published
- 2026-09-04
- Last modified
- 2026-09-08
Affected products
- YesWiki yeswiki
Weakness type
Related vulnerabilities
- CVE-2026-19584 — Velociraptor VQL injection during notebook restore from backup
- CVE-2026-87021 — Tanium addressed an unauthorized code execution vulnerability in Comply.
- CVE-2026-33387 — Insufficient sanitization of Dashboards in Guardian/CMC before 26.3.0
- CVE-2026-75650 — Adobe Commerce | Improper Neutralization of Special Elements Used in a Template Engine (CWE-1336)
- CVE-2026-46636 — Twig: Sandbox method allowlist bypass via `Markup` subclass
- CVE-2026-85654 — Code injection in the CDK generator in Amazon awslabs.dynamodb-mcp-server
- CVE-2026-13297 — Security vulnerabilities have been addressed in IBM Verify Identity Access and IBM Security Verify Access
- CVE-2026-75036 — Fleet: DNS exfiltration via Sprig getHostByName in fleet.yaml Helm template preprocessing