PYSEC-2026-2785 Open Babel has out-of-bounds read in PQS lowerit (pre-buffer read)

Summary A memory-safety vulnerability in Open Babel's PQS parser caused an out-of-bounds pre-buffer read when reading a crafted input file. Details The flaw was in the lowerit helper used by the PQS parser. A malformed input caused the helper to read one or more bytes before the start of its inpu...

Open Babel has out-of-bounds write (overlapping memcpy) in zipstream basic_unzip_streambuf::underflow

SummaryA memory-safety vulnerability in Open Babel's bundled zipstreamdecompression code caused an out-of-bounds write via overlappingmemcpy when reading a crafted gzip-compressed chemistry file. DetailsThe flaw was in basicunzipstreambuf::underflow. The decompressionbuffer refill path invoked...

Open Babel has heap buffer overflow in ChemKin ChemKinFormat::CheckSpecies

SummaryA memory-safety vulnerability in Open Babel's ChemKin parser causeda heap buffer overflow when reading a crafted input file. DetailsThe flaw was in ChemKinFormat::CheckSpecies. A malformed speciesrecord caused the parser to write past the end of a heap-allocatedbuffer. ImpactOpen Babel is ...

Open Babel has an out-of-bounds read in CIF transform3d::DescribeAsString

Summary A memory-safety vulnerability in Open Babel's CIF file format parser allowed an out-of-bounds read when reading a crafted input file. Details The flaw was in OpenBabel::transform3d::DescribeAsString. A malformed symmetry-operation string caused the parser to read past the end of its...

PYSEC-2026-2770 Open Babel has NULL pointer dereference in MOL2 OBAtom::SetFormalCharge

Summary A memory-safety vulnerability in Open Babel's MOL2 file format parser caused a NULL pointer dereference when reading a crafted input file. Details The flaw was in OBAtom::SetFormalCharge as called from the MOL2 parser. A malformed atom record caused the parser to call the method on a NULL...

Open Babel has NULL pointer dereference in MOL2 OBAtom::SetFormalCharge

SummaryA memory-safety vulnerability in Open Babel's MOL2 file format parsercaused a NULL pointer dereference when reading a crafted input file. DetailsThe flaw was in OBAtom::SetFormalCharge as called from the MOL2parser. A malformed atom record caused the parser to call the methodon a NULL atom...

PYSEC-2026-2772 Open Babel has NULL pointer dereference in CACAO CacaoFormat::SetHilderbrandt

Summary A memory-safety vulnerability in Open Babel's CACAO parser caused a NULL pointer dereference when reading a crafted input file. Details The flaw was in CacaoFormat::SetHilderbrandt. A malformed input caused the parser to dereference a NULL pointer while applying the Hilderbrandt...

Open Babel has out-of-bounds write in CSR PadString (title field)

SummaryA memory-safety vulnerability in Open Babel's CSR parser allowed anout-of-bounds write when reading a crafted input file. DetailsThe flaw was in the PadString helper used to handle the CSR titlefield. A title longer than the fixed destination buffer caused theparser to write past the end o...

PYSEC-2026-2778 Open Babel has heap buffer overflow in ChemKin ChemKinFormat::CheckSpecies

Summary A memory-safety vulnerability in Open Babel's ChemKin parser caused a heap buffer overflow when reading a crafted input file. Details The flaw was in ChemKinFormat::CheckSpecies. A malformed species record caused the parser to write past the end of a heap-allocated buffer. Impact Open Bab...

Open Babel has out-of-bounds read in PQS lowerit (pre-buffer read)

SummaryA memory-safety vulnerability in Open Babel's PQS parser caused anout-of-bounds pre-buffer read when reading a crafted input file. DetailsThe flaw was in the lowerit helper used by the PQS parser. Amalformed input caused the helper to read one or more bytes beforethe start of its input...

PYSEC-2026-2776 Open Babel has out-of-bounds write (overlapping memcpy) in zipstream basic_unzip_streambuf::underflow

Summary A memory-safety vulnerability in Open Babel's bundled zipstream decompression code caused an out-of-bounds write via overlapping memcpy when reading a crafted gzip-compressed chemistry file. Details The flaw was in basicunzipstreambuf::underflow. The decompression buffer refill path invok...

PYSEC-2026-2789 Open Babel has Use-after-free in GAMESS GAMESSOutputFormat::ReadMolecule

Summary A memory-safety vulnerability in Open Babel's GAMESS output parser caused a use-after-free when reading a crafted input file. Details The flaw was in GAMESSOutputFormat::ReadMolecule. A malformed input caused the parser to dereference a stale pointer after the underlying object had been...

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...

PYSEC-2026-2788 Open Babel has out-of-bounds write in CSR PadString (title field)

Summary A memory-safety vulnerability in Open Babel's CSR parser allowed an out-of-bounds write when reading a crafted input file. Details The flaw was in the PadString helper used to handle the CSR title field. A title longer than the fixed destination buffer caused the parser to write past the...

Open Babel has NULL pointer dereference in ChemKinFormat::ReadReactionQualifierLines

SummaryA memory-safety vulnerability in Open Babel's ChemKin parser causeda NULL pointer dereference when reading a crafted input file. DetailsThe flaw was in ChemKinFormat::ReadReactionQualifierLines. Amalformed reaction qualifier record caused the parser to dereferencea NULL pointer. ImpactOpen...

Open Babel has NULL pointer dereference in CACAO CacaoFormat::SetHilderbrandt

SummaryA memory-safety vulnerability in Open Babel's CACAO parser caused aNULL pointer dereference when reading a crafted input file. DetailsThe flaw was in CacaoFormat::SetHilderbrandt. A malformed inputcaused the parser to dereference a NULL pointer while applying theHilderbrandt transformation...

Open Babel has Use-after-free in GAMESS GAMESSOutputFormat::ReadMolecule

SummaryA memory-safety vulnerability in Open Babel's GAMESS output parsercaused a use-after-free when reading a crafted input file. DetailsThe flaw was in GAMESSOutputFormat::ReadMolecule. A malformed inputcaused the parser to dereference a stale pointer after the underlyingobject had been freed...

PYSEC-2026-2774 Open Babel has an out-of-bounds read in CIF transform3d::DescribeAsString

Summary A memory-safety vulnerability in Open Babel's CIF file format parser allowed an out-of-bounds read when reading a crafted input file. Details The flaw was in OpenBabel::transform3d::DescribeAsString. A malformed symmetry-operation string caused the parser to read past the end of its...

gabposter (>=1.2.5, <=1.2.8), open-webdriver (>=1.3.5, <=1.6.9) +4 more potentially affected by CVE-2026-55206 via py7zr (0.20.2)

py7zr PYPI version 0.20.2 is affected by a known vulnerability. The following packages have a transitive dependency on py7zr and may be impacted: - gabposter =1.2.5, =1.3.5, =1.0.4, =1.0.0, =1.0.10, =1.0.0, =1.2.86 Source cves: CVE-2026-55206 Source advisory: OSV:PYSEC-2026-2973...

gabposter (>=1.2.5, <=1.2.8), open-webdriver (>=1.3.5, <=1.6.9) +4 more potentially affected by CVE-2026-23879 via py7zr (0.20.2)

py7zr PYPI version 0.20.2 is affected by a known vulnerability. The following packages have a transitive dependency on py7zr and may be impacted: - gabposter =1.2.5, =1.3.5, =1.0.4, =1.0.0, =1.0.10, =1.0.0, =1.2.86 Source cves: CVE-2026-23879 Source advisory: OSV:PYSEC-2026-2974...