PYSEC-2026-2791 Open Babel has a NULL pointer dereference in CDXML OBAtom::GetExplicitValence

Summary A memory-safety vulnerability in Open Babel's CDXML file format parser caused a NULL pointer dereference when reading a crafted input file. Details The flaw was in OBAtom::GetExplicitValence as called from the CDXML parser. A malformed fragment caused the parser to invoke the method on a...

Open Babel has out-of-bounds write in MSI translationVectors[]

Summary A memory-safety vulnerability in Open Babel's MSI parser allowed an out-of-bounds write into the translationVectors array when reading a crafted input file. Details The MSI reader stored cell translation vectors into a fixed-size translationVectors array. A malformed input could push more...