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Security fixes: - CVE-2026-22801: heap buffer over-read in png_image_write_* functions - CVE-2026-25646: heap buffer overflow in png_set_quantize() (potential RCE) Refs #5207
Fixes out-of-bounds memory access when calling utf8proc_map with both UTF8PROC_CHARBOUND and UTF8PROC_DECOMPOSE flags set. Refs #5207
Fixes deadlock in broken-posix-lock detection logic and multiple problems in the EXISTS-to-JOIN optimization from 3.51.0. Refs #5207
Build/portability improvements, out-of-bounds pointer arithmetic fix in inflateCopy(), deflateBound() made more conservative. Refs #5207
Improved code for ZIP, CPIO, RAR, UDF, QCOW, and Compound archive formats. Fixed TAR archive extraction for sparse files. Refs #5207
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Summary
Upgrade all out-of-date bundled dependencies and add version/source comments to all dependency CMakeLists.txt files.
Dependency Upgrades
Already Up-to-Date (no changes)
PCRE2 10.47, expat 2.7.4, double-conversion 3.3.1, libharu 2.4.5, Quill 11.0.2, pdjson, wepoll
CMakeLists.txt Version Comments
Added consistent version and source URL header comments to all 12 bundled dependency CMakeLists.txt files (2 already had them: expat and v8_double_conversion).
Test plan
Resolves #5207