diff --git a/docker/.env.example b/docker/.env.example
index 5a2a426338..59c847aaaf 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -822,6 +822,9 @@ MAX_ITERATIONS_NUM=99
 # The timeout for the text generation in millisecond
 TEXT_GENERATION_TIMEOUT_MS=60000
 
+# Allow rendering unsafe URLs which have "data:" scheme.
+ALLOW_UNSAFE_DATA_SCHEME=false
+
 # ------------------------------
 # Environment Variables for db Service
 # ------------------------------
diff --git a/docker/docker-compose-template.yaml b/docker/docker-compose-template.yaml
index f370934a3a..d05e930d47 100644
--- a/docker/docker-compose-template.yaml
+++ b/docker/docker-compose-template.yaml
@@ -67,6 +67,7 @@ services:
       TEXT_GENERATION_TIMEOUT_MS: ${TEXT_GENERATION_TIMEOUT_MS:-60000}
       CSP_WHITELIST: ${CSP_WHITELIST:-}
       ALLOW_EMBED: ${ALLOW_EMBED:-false}
+      ALLOW_UNSAFE_DATA_SCHEME: ${ALLOW_UNSAFE_DATA_SCHEME:-false}
       MARKETPLACE_API_URL: ${MARKETPLACE_API_URL:-https://marketplace.dify.ai}
       MARKETPLACE_URL: ${MARKETPLACE_URL:-https://marketplace.dify.ai}
       TOP_K_MAX_VALUE: ${TOP_K_MAX_VALUE:-}
diff --git a/docker/docker-compose.yaml b/docker/docker-compose.yaml
index 5f13060658..1406367242 100644
--- a/docker/docker-compose.yaml
+++ b/docker/docker-compose.yaml
@@ -362,6 +362,7 @@ x-shared-env: &shared-api-worker-env
   MAX_PARALLEL_LIMIT: ${MAX_PARALLEL_LIMIT:-10}
   MAX_ITERATIONS_NUM: ${MAX_ITERATIONS_NUM:-99}
   TEXT_GENERATION_TIMEOUT_MS: ${TEXT_GENERATION_TIMEOUT_MS:-60000}
+  ALLOW_UNSAFE_DATA_SCHEME: ${ALLOW_UNSAFE_DATA_SCHEME:-false}
   POSTGRES_USER: ${POSTGRES_USER:-${DB_USERNAME}}
   POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-${DB_PASSWORD}}
   POSTGRES_DB: ${POSTGRES_DB:-${DB_DATABASE}}
@@ -580,6 +581,7 @@ services:
       TEXT_GENERATION_TIMEOUT_MS: ${TEXT_GENERATION_TIMEOUT_MS:-60000}
       CSP_WHITELIST: ${CSP_WHITELIST:-}
       ALLOW_EMBED: ${ALLOW_EMBED:-false}
+      ALLOW_UNSAFE_DATA_SCHEME: ${ALLOW_UNSAFE_DATA_SCHEME:-false}
       MARKETPLACE_API_URL: ${MARKETPLACE_API_URL:-https://marketplace.dify.ai}
       MARKETPLACE_URL: ${MARKETPLACE_URL:-https://marketplace.dify.ai}
       TOP_K_MAX_VALUE: ${TOP_K_MAX_VALUE:-}