Blog by Daniel Stenberg
curl, networking, software security and open-source maintenance.
10 posts in the last 90 days · newest 22 Oct
10 of 10 posts on this page
Daniel Stenberg
Lots of people who are against the use of AI for all its ethical and inherent issues tell me this. Just ignore it. Don’t let big AI control us. The “slop” they refer to is anything created that involved an AI, and in our case (the curl project) it is in particular vulnerability…
Daniel Stenberg
The curl project has decided to alter its vulnerability disclosure program procedure and starting October 26 2026, we insist that all vulnerability reports submitted to us that are deemed to be severity LOW or MEDIUM should instead be submitted as issues in our GitHub…
Daniel Stenberg
curl started out GPL licensed, as direct inheritance from its httpget days, but in October 1998 we switched to the Mozilla Public License (MPL). In 2001, we added the MIT license as an additional license to optionally use in addition to MPL. We made curl dual licensed because…
Daniel Stenberg
Over the last year or so, multiple engineers at Aisle have spent a lot of time and energy while pointing their AI powered tooling at the curl source code. This has resulted in no less than thirty-five published curl vulnerabilities and CVE Ids. Today, we make Aisle’s audit…
Daniel Stenberg
In the curl 8.23.0 release we shipped a fix for one of the worst vulnerabilities in curl in a long time. We grade it severity HIGH. It is known as CVE-2026-92392 with the title HTTP/2 upload Use-After-Free. This post explains the bug, what the problem can lead to, and something…
Daniel Stenberg
Release presentation Numbers the 277th release4 changes42 days (total: 10,929)281 bugfixes (total: 14,770)476 commits (total: 40,084)0 new public libcurl function (total: 100)0 new curl_easy_setopt() option (total: 312)0 new curl command line option (total: 278)84 contributors…
Daniel Stenberg
Back in August I mentioned the new curl performance tests we have running. I figured it could be apt to return to this topic just to mention some of the initial outcomes. When the team gets a new set of charts, graphs and plots that visualize something, like performance, they…
Daniel Stenberg
The curl security team happens to also double as the curl core team. The small group of people who assess security reports and take project decisions. The exact set of participants in this team of course vary over time, as this is a volunteer membership role without monetary…
Daniel Stenberg
On October 14 2026 we will ship curl 8.23.0. The next iteration in the never-ending series of version bumps from the curl project. We always think of the next release as the best version we ever did – and this time is no exception. Decades of collected experiences and…
Daniel Stenberg
Exactly on this day, September 25 2001, Apple shipped version 10.1 of their OS X operating system. The one they later would rename to macOS. Exactly twenty-five years ago today. Within all their fancy release presentations and videos there are barely no mentions of curl. In…
