Mozilla has released an update to its Firefox browser, fixing a known security flaw in the open-source software.The bug, reported last week, relates to the way Firefox handles JavaScript code. It could be exploited by attackers to crash an unpatched browser, and in theory could also provide them with a way to trick the browser into running malicious code, Mozilla said in a security alert.The problem has to do with an error caused when Firefox handles certain unexpected “contentWindow.focus()” JavaScript code. It can be circumvented by disabling Firefox’s JavaScript handling capability.Users of the older Firefox 1.0 browsers and the Mozilla Suite 1.7 are not affected by the flaw, and Firefox 1.5 users should soon start to receive software patches under the browser’s automatic update system. Mozilla developers said last week that they had reduced the number of features in the 1.5.0.3 update in order to speed up the release of this security fix.Release notes for the 1.5.0.3 browser can be found online. -Robert McMillan, IDG News ServiceCheck out our CIO News Alerts and Tech Informer pages for more updated news coverage. Related content feature Red Hat embraces hybrid cloud for internal IT The maker of OpenShift has leveraged its own open container offering to migrate business-critical apps to AWS as part of a strategy to move beyond facilitating hybrid cloud for others and capitalize on the model for itself. By Paula Rooney May 29, 2023 5 mins CIO 100 Technology Industry Hybrid Cloud feature 10 most popular IT certifications for 2023 Certifications are a great way to show employers you have the right IT skills and specializations for the job. These 10 certs are the ones IT pros are most likely to pursue, according to data from Dice. By Sarah K. White May 26, 2023 8 mins Certifications Careers interview Stepping up to the challenge of a global conglomerate CIO role Dr. Amrut Urkude became CIO of Reliance Polyester after his company was acquired by Reliance Industries. He discusses challenges IT leaders face while transitioning from a small company to a large multinational enterprise, and how to overcome them. By Yashvendra Singh May 26, 2023 7 mins Digital Transformation Careers brandpost With the new financial year looming, now is a good time to review your Microsoft 365 licenses By Veronica Lew May 25, 2023 5 mins Lenovo Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe