Opera 12.13 is a recommended upgrade offering security and stability enhancements. Fixes and Stability Enhancements since Opera 12.12 General and User Interface Fixed an issue where Opera gets internal communication errors on Facebook Fixed an issue where no webpages load on startup, if Opera is disconnected from the Internet Fixed an issue where images will not load after back navigation, when a site uses the HTML5 history API (deviantart.com) Linux and Windows A new stand-alone update-checker, as part of a planned upgrade of the auto-update system Windows Improved protection against hijacking of the default search, including a one-time reset Security Fixed an issue where DOM events manipulation might be used to execute arbitrary code, as reported by Arthur Gerkis; see our advisory Fixed an issue where use of SVG clipPaths could allow execution of arbitrary code, as reported by anonymous via the iSIGHT Partners GVP Program; see our advisory Fixed a low severity security issue; details will be disclosed at a later date Fixed an issue where CORS requests could omit the preflight request, as reported by webpentest; see our advisory
Opera 12.14 is a recommended upgrade offering security and stability enhancements. Fixes and Stability Enhancements since Opera 12.13 General and User Interface Update addresses a re-occuring crash, allowing users to update two or more extensions at one time.
Opera 12.15 is a recommended upgrade offering security and stability enhancements. Fixes and Stability Enhancements since Opera 12.14 General and User Interface Fixed an issue where the search bar's default engine could be overridden by third-party apps. Security Fixed a moderately severe issue, as reported by Attila Suszter; details will be disclosed at a later date. Added safeguards against attacks on the RC4 encryption protocol; see our advisory. Fixed an issue where cookies could be set for a top-level domain; see our advisory.