CVE-2026-111138

NetSurf libnsbmp through 0.1.7 contains an out-of-bounds read vulnerability in bmp decode rle8() and bmp decode rle4() because absolute-run bound checks omit the word-alignment pad byte. Attackers can supply a crafted RLE8 or RLE4 BMP ending on an odd-length absolute run to cause a one-byte heap over-read, crashing applications decoding untrusted images.