Update plugin_vulns.xml

Hi there,

adding http://packetstormsecurity.com/files/126521/wpphotogallery-xsrf.txt to the list, security researcher was a bad boy and didn't specify version or anything.

Ta,
Pedro

data/plugin_vulns.xml

@@ -12541,5 +12541,15 @@
       <fixed_in>1.2</fixed_in>
     </vulnerability>
   </plugin>
+  
+  <plugin name="photo-gallery">
+    <vulnerability>
+      <title>WordPress Photo-Gallery Cross Site Request Forgery</title>
+      <references>
+        <url>http://packetstormsecurity.com/files/126521/wpphotogallery-xsrf.txt</url>
+      </references>
+      <type>CSRF</type>
+    </vulnerability>
+  </plugin>
 
 </vulnerabilities>