PYSEC-2026-2771 Open Babel has out-of-bounds write in MOPAC translationVectors[] (UNIT CELL TRANSLATION)

Summary A memory-safety vulnerability in Open Babel's MOPAC output parser allowed an out-of-bounds write into the translationVectors array when reading the "UNIT CELL TRANSLATION" block of a crafted input file. Details The MOPAC output reader stored translation vectors from the UNIT CELL...

Open Babel has out-of-bounds write in MOPAC translationVectors[] (UNIT CELL TRANSLATION)

SummaryA memory-safety vulnerability in Open Babel's MOPAC output parserallowed an out-of-bounds write into the translationVectors arraywhen reading the "UNIT CELL TRANSLATION" block of a crafted inputfile. DetailsThe MOPAC output reader stored translation vectors from the UNIT CELLTRANSLATION...

PYSEC-2026-2790 Open Babel has out-of-bounds write in ORCA nAtoms parser

Summary A memory-safety vulnerability in Open Babel's ORCA parser allowed an out-of-bounds write when reading a crafted input file. Details The flaw was in the nAtoms handling of the ORCA reader. A malformed input caused the parser to write past the end of its destination buffer. Impact Open Babe...

Open Babel has out-of-bounds write in PQS coord_file parser

SummaryA memory-safety vulnerability in Open Babel's PQS parser allowed anout-of-bounds write when reading a crafted input file. DetailsThe flaw was in the coordfile parsing path of the PQS reader. Amalformed coord file specifier caused the parser to write past theend of its destination buffer...

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

SummaryA memory-safety vulnerability in Open Babel's Gaussian output parserallowed an out-of-bounds write into the translationVectors arraywhen reading a crafted input file. DetailsThe Gaussian reader stored periodic-cell translation vectors into afixed-size translationVectors array. A malformed...

Open Babel has out-of-bounds write in MOPAC IN translationVectors[] (Tv atom)

SummaryA memory-safety vulnerability in Open Babel's MOPAC input parserallowed an out-of-bounds write into the translationVectors arraywhen reading Tv translation-vector atoms from a crafted inputfile. DetailsThe MOPAC IN reader stored Tv-atom translation vectors into afixed-size translationVecto...

Open Babel has uninitialized pointer dereference in PQS pFormat

SummaryA memory-safety vulnerability in Open Babel's PQS parser caused anuninitialized pointer dereference when reading a crafted input file. DetailsThe flaw was in the pFormat handling of the PQS reader. A malformedinput caused the parser to dereference a format pointer that hadnever been...

PYSEC-2026-2779 Open Babel has out-of-bounds write in PQS coord_file parser

Summary A memory-safety vulnerability in Open Babel's PQS parser allowed an out-of-bounds write when reading a crafted input file. Details The flaw was in the coordfile parsing path of the PQS reader. A malformed coord file specifier caused the parser to write past the end of its destination...

PYSEC-2026-2777 Open Babel has uninitialized pointer dereference in PQS pFormat

Summary A memory-safety vulnerability in Open Babel's PQS parser caused an uninitialized pointer dereference when reading a crafted input file. Details The flaw was in the pFormat handling of the PQS reader. A malformed input caused the parser to dereference a format pointer that had never been...

PYSEC-2026-2775 Open Babel has out-of-bounds write in MOPAC translationVectors[] (FINAL POINT)

Summary A memory-safety vulnerability in Open Babel's MOPAC output parser allowed an out-of-bounds write into the translationVectors array when reading the "FINAL POINT" block of a crafted input file. Details The MOPAC output reader stored translation vectors from the FINAL POINT block into a...

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

SummaryA memory-safety vulnerability in Open Babel's MSI parser allowed anout-of-bounds write into the translationVectors array whenreading a crafted input file. DetailsThe MSI reader stored cell translation vectors into a fixed-sizetranslationVectors array. A malformed input could push morevecto...

Open Babel has uninitialized pointer dereference in GRO residue parser

SummaryA memory-safety vulnerability in Open Babel's GRO parser caused anuninitialized pointer dereference when reading a crafted input file. DetailsThe flaw was in the residue handling of the GRO reader. A malformedrecord caused the parser to use a residue pointer that had never beeninitialized...

Open Babel has out-of-bounds write in MOL2 attribute/value parser

SummaryA memory-safety vulnerability in Open Babel's MOL2 parser allowed anout-of-bounds write when reading a crafted input file. DetailsThe flaw was in the attribute/value parsing path of the MOL2 reader.An over-long attribute or value caused the parser to write past theend of a fixed-size...

Open Babel has out-of-bounds write in ORCA nAtoms parser (second variant)

SummaryA memory-safety vulnerability in Open Babel's ORCA parser allowed anout-of-bounds write when reading a crafted input file. DetailsA second variant of the nAtoms out-of-bounds write in the ORCAreader: a different malformed-input path produced the same class ofwrite past the end of the...

PYSEC-2026-2780 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...

PYSEC-2026-2783 Open Babel has out-of-bounds write in Gaussian translationVectors[]

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

PYSEC-2026-2787 Open Babel has uninitialized pointer dereference in GRO residue parser

Summary A memory-safety vulnerability in Open Babel's GRO parser caused an uninitialized pointer dereference when reading a crafted input file. Details The flaw was in the residue handling of the GRO reader. A malformed record caused the parser to use a residue pointer that had never been...

PYSEC-2026-2773 Open Babel has out-of-bounds write in ORCA nAtoms parser (second variant)

Summary A memory-safety vulnerability in Open Babel's ORCA parser allowed an out-of-bounds write when reading a crafted input file. Details A second variant of the nAtoms out-of-bounds write in the ORCA reader: a different malformed-input path produced the same class of write past the end of the...

Open Babel has out-of-bounds write in MOPAC translationVectors[] (FINAL POINT)

SummaryA memory-safety vulnerability in Open Babel's MOPAC output parserallowed an out-of-bounds write into the translationVectors arraywhen reading the "FINAL POINT" block of a crafted input file. DetailsThe MOPAC output reader stored translation vectors from the FINALPOINT block into a fixed-si...

Open Babel has uninitialized pointer dereference in MSI atom parser

SummaryA memory-safety vulnerability in Open Babel's MSI parser caused anuninitialized pointer dereference when reading a crafted input file. DetailsThe flaw was in the atom handling of the MSI reader. A malformedrecord caused the parser to dereference an atom pointer that hadnever been...