diff --git a/Dockerfile b/Dockerfile
index 1b10086..386d044 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -41,6 +41,10 @@ RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local
 # Copy configs and web files
 COPY ./configs/default-index.conf /etc/httpd/conf.d/
 COPY ./configs/prod-php.ini /etc/php.ini
+# php2shell mitigation (CVE-2026-109618/-109619). Named zz- so it sorts after
+# every other scan-dir ini (incl. runtime-written 99-*) and wins. Remove once
+# all images ship PHP >= 8.2.35 / 8.3.36 / 8.4.27 / 8.5.12.
+COPY ./configs/zz-php2shell-mitigation.ini /etc/php.d/zz-php2shell-mitigation.ini
 COPY ./configs/phpinfo.php /var/www/html/
 COPY ./configs/mariadb.repo /etc/yum.repos.d/
 COPY ./configs/index.php /var/www/html/
diff --git a/Dockerfile.fpm b/Dockerfile.fpm
index 3500108..96a2e27 100644
--- a/Dockerfile.fpm
+++ b/Dockerfile.fpm
@@ -39,6 +39,10 @@ RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local
 
 # Copy configs (PHP only, no Apache configs)
 COPY ./configs/prod-php.ini /etc/php.ini
+# php2shell mitigation (CVE-2026-109618/-109619). Named zz- so it sorts after
+# every other scan-dir ini (incl. runtime-written 99-*) and wins. Remove once
+# all images ship PHP >= 8.2.35 / 8.3.36 / 8.4.27 / 8.5.12.
+COPY ./configs/zz-php2shell-mitigation.ini /etc/php.d/zz-php2shell-mitigation.ini
 COPY ./configs/mariadb.repo /etc/yum.repos.d/
 
 # Set up cron job for log rotation
diff --git a/Dockerfile.litespeed b/Dockerfile.litespeed
index 7282054..a08aea8 100644
--- a/Dockerfile.litespeed
+++ b/Dockerfile.litespeed
@@ -83,6 +83,10 @@ COPY ./scripts/entrypoint-litespeed.sh \
      /scripts/
 RUN chmod +x /scripts/*
 COPY ./configs/litespeed/ /etc/lsws-templates/
+## php2shell mitigation (CVE-2026-109618/-109619). Named zz- so it sorts after
+## every other scan-dir ini (incl. runtime-written 99-*) and wins. Remove once
+## all images ship PHP >= 8.2.35 / 8.3.36 / 8.4.27 / 8.5.12.
+COPY ./configs/zz-php2shell-mitigation.ini /etc/lsws-templates/zz-php2shell-mitigation.ini
 
 ## Apply our production lsphp ini overrides. Ask lsphp for its scan dir
 ## directly (varies by PHP minor version: 8.3/8.4/8.5 each have their own
@@ -92,6 +96,7 @@ RUN bash -c 'set -e; \
     SCAN_DIR=$(/usr/local/lsws/lsphp${PHPVER}/bin/lsphp -i 2>/dev/null | awk -F"=> " "/^Scan this dir/ {print \$2; exit}"); \
     mkdir -p "$SCAN_DIR"; \
     cp /etc/lsws-templates/lsphp-overrides.ini "$SCAN_DIR/99-prod-overrides.ini"; \
+    cp /etc/lsws-templates/zz-php2shell-mitigation.ini "$SCAN_DIR/zz-php2shell-mitigation.ini"; \
     echo "wrote overrides to $SCAN_DIR"'
 
 ## Disable the OLS WebAdmin port for customer-facing containers. Bind admin
diff --git a/Dockerfile.lsphp b/Dockerfile.lsphp
index 47c178a..e05084d 100644
--- a/Dockerfile.lsphp
+++ b/Dockerfile.lsphp
@@ -201,10 +201,15 @@ RUN chmod +x /scripts/entrypoint-lsphp.sh /scripts/detect-memory-lsphp.sh /scrip
 ## Apply production lsphp ini overrides into lsphp's scan dir (path varies by
 ## PHP minor version; ask lsphp directly — same idiom as Dockerfile.litespeed).
 COPY ./configs/litespeed/lsphp-overrides.ini /etc/lsws-templates/lsphp-overrides.ini
+## php2shell mitigation (CVE-2026-109618/-109619). Named zz- so it sorts after
+## every other scan-dir ini (incl. runtime-written 99-*) and wins. Remove once
+## all images ship PHP >= 8.2.35 / 8.3.36 / 8.4.27 / 8.5.12.
+COPY ./configs/zz-php2shell-mitigation.ini /etc/lsws-templates/zz-php2shell-mitigation.ini
 RUN bash -c 'set -e; \
     SCAN_DIR=$(/usr/local/lsws/lsphp${PHPVER}/bin/lsphp -i 2>/dev/null | awk -F"=> " "/^Scan this dir/ {print \$2; exit}"); \
     mkdir -p "$SCAN_DIR"; \
     cp /etc/lsws-templates/lsphp-overrides.ini "$SCAN_DIR/99-prod-overrides.ini"; \
+    cp /etc/lsws-templates/zz-php2shell-mitigation.ini "$SCAN_DIR/zz-php2shell-mitigation.ini"; \
     echo "wrote overrides to $SCAN_DIR"'
 
 ## Install the cac_path_parity extension into lsphp's own extension_dir and load
diff --git a/configs/zz-php2shell-mitigation.ini b/configs/zz-php2shell-mitigation.ini
new file mode 100644
index 0000000..f0fd820
--- /dev/null
+++ b/configs/zz-php2shell-mitigation.ini
@@ -0,0 +1,5 @@
+; php2shell mitigation (CVE-2026-109618 / CVE-2026-109619, GHSA-w8hw-w9fx-j79w, GHSA-6wmf-4rv5-p3rp)
+; Remove once all images ship PHP >= 8.2.35 / 8.3.36 / 8.4.27 / 8.5.12.
+fatal_error_backtraces = 0
+session.upload_progress.enabled = 0
+max_input_nesting_level = 16