curl

Windows PHP Updated to Patch Critical Brotli Vulnerability CVE-2026-111497

The PHP development team has released updated Windows builds of PHP that bundle a patched version of the Brotli compression library. The update addresses CVE-2026-111497, a critical out-of-bounds write flaw in Google's Brotli decoder that can lead to remote code execution, information disclosure, or denial of service. The vulnerability carries a CVSS v4.0 base score of 9.2 and is rated Critical. It affects PHP environments where the cURL extension has automatic decompression of HTTP responses enabled, allowing Brotli decoding to occur. Although cURL automatic decompression is disabled by default, applications or HTTP client libraries may enable it. The fix updates the bundled Brotli component to version 1.2.1 in the releases PHP 8.5.12-1, 8.4.27-1, 8.3.36-1, and 8.2.35-1 published on October 26.

Use-After-Free in HTTP/2 Upload Leads to Potential RCE in curl: Detailed Analysis of CVE-2026-92392

In curl 8.23.0, developers fixed a high-severity Use-After-Free vulnerability tracked as CVE-2026-92392 that could allow remote code execution during HTTP/2 uploads. The flaw stems from a dangling pointer left on an easy handle after a server resets an HTTP/2 stream, which later gets dereferenced when the multi handle closes. An attacker controlling the server can influence memory contents to hijack a function pointer and execute arbitrary code, though successful exploitation requires precise conditions including upload size, memory layout, and knowledge of the target architecture. The issue was discovered by Luna Tong at Anthropic using their OSS Scanner and reported to the curl security team on September 15. The team accelerated the release cycle by two weeks to deliver the fix while maintaining standard procedures. curl maintainers continue reducing internal handle pointers in favor of identifiers and are adding more tests and static analysis to prevent similar memory-safety errors. The vulnerability highlights ongoing risks in C-based networking code handling multiplexed protocols like HTTP/2.

Anthropic OSS Scanner Uncovers 29,439 Vulnerability Candidates in Open Source Projects, Delivering 6,157 Reports and 516 Fixes

Anthropic has published detailed metrics from its six-month coordinated vulnerability disclosure program that preceded the launch of its automated OSS Scanner service. The company’s models identified 29,439 potential vulnerabilities, of which external firms verified 6,123 candidates and confirmed 5,674 as genuine issues. From the 6,157 reports sent to maintainers across 591 projects, only 516 fixes have been merged so far, representing an 8.4 percent remediation rate among delivered reports. Anthropic emphasizes that 78 percent of reports were sent without independent human triage, and the new OSS Scanner now delivers fully model-generated findings directly to approved projects. Maintainers from PostgreSQL, curl, OpenSSL, wolfSSL and HotCRP have praised the quality of recent reports while noting that earlier AI-generated submissions were largely noise. The dashboard snapshot dated 2 October 2026 shows that 584 identifiers (219 CVE and 365 GHSA) have been issued, yet many confirmed issues remain in the triage queue due to limited human resources.