CVE-2026-18477

A TOCTOU Time-of-Check Time-of-Use vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write access to a directory being backed up to influence the restore process if the attacker has access to the system where the restore is being performed. During...

CVE-2026-18508

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

CVE-2026-18477

CVE-2026-18477 describes a TOCTOU flaw in GNU tar related to incremental dumpdir rename handling. A local attacker with write access to a directory being backed up can influence the restore process on the target system, causing files/directories to be created, renamed, or overwritten outside the ...

EUVD-2026-52336

A TOCTOU Time-of-Check Time-of-Use vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write access to a directory being backed up to influence the restore process if the attacker has access to the system where the restore is being performed. During...

CVE-2026-18508 Tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

CVE-2026-57053

A flaw was found in GNU libidn. This vulnerability allows an attacker to cause out-of-bounds reads of uninitialized memory within the ToUnicode APIs due to mishandling in the idnatounicodeinternal function. This could lead to information disclosure or a denial of service. Mitigation No...

CVE-2026-56390

A flaw was found in GNU Bison. When processing attacker-supplied grammar, the software improperly handles grammar-defined output paths. This allows an attacker to use directives such as %output and %header to specify arbitrary file paths. Consequently, generated files can be directed to any...

SUSE CVE-2026-56389

GNU Bison allows for an execution of an arbitrary program during HTML report generation due to improper handling of grammar-defined configuration variables. A grammar file can override the executable used for the XML-to-HTML transformation step via %define tool.xsltproc, which is accepted without...

SUSE CVE-2026-56390

GNU Bison improperly handles grammar-defined output paths. Grammar directives such as %output and %header allow specifying file paths, which are accepted without restriction and override caller-supplied output options. When processing attacker-supplied grammar, this behavior allows directing...

UBUNTU-CVE-2026-56390

GNU Bison improperly handles grammar‑defined output paths. Grammar directives such as %output and %header allow specifying file paths, which are accepted without restriction and override caller‑supplied output options. When processing attacker-supplied grammar, this behavior allows directing...

UBUNTU-CVE-2026-56389

GNU Bison allows for an execution of an arbitrary program during HTML report generation due to improper handling of grammar-defined configuration variables. A grammar file can override the executable used for the XML‑to‑HTML transformation step via %define tool.xsltproc, which is accepted without...

CVE-2026-56390

GNU Bison improperly handles grammar‑defined output paths. Grammar directives such as %output and %header allow specifying file paths, which are accepted without restriction and override caller‑supplied output options. When processing attacker-supplied grammar, this behavior allows directing...

CVE-2026-18220 Binutils: binutils: out-of-bounds write in bfd dlx elf backend relocation processing

An out-of-bounds write vulnerability was found in the BFD library's DLX ELF backend bfd/elf32-dlx.c in GNU binutils. The dlxrtypetohowto function maps ELF relocation types to internal howto structures but fails to perform adequate bounds checking on attacker-controlled relocation type values via...

CVE-2026-56390

GNU Bison is affected by CVE-2026-56390 through grammar-defined output directives (%output, %header), which can accept unrestricted file paths and override caller-supplied output options. When processing attacker-supplied grammar, this allows writing generated files to arbitrary writable location...

CVE-2026-56390 Arbitrary Output Location Change in GNU Bison

GNU Bison improperly handles grammar‑defined output paths. Grammar directives such as %output and %header allow specifying file paths, which are accepted without restriction and override caller‑supplied output options. When processing attacker-supplied grammar, this behavior allows directing...

EUVD-2026-50277

GNU Bison improperly handles grammar‑defined output paths. Grammar directives such as %output and %header allow specifying file paths, which are accepted without restriction and override caller‑supplied output options. When processing attacker-supplied grammar, this behavior allows directing...

CVE-2026-56390

GNU Bison improperly handles grammar‑defined output paths. Grammar directives such as %output and %header allow specifying file paths, which are accepted without restriction and override caller‑supplied output options. When processing attacker-supplied grammar, this behavior allows directing...

CVE-2026-56389 Arbitrary Command Execution in GNU Bison

GNU Bison allows for an execution of an arbitrary program during HTML report generation due to improper handling of grammar-defined configuration variables. A grammar file can override the executable used for the XML‑to‑HTML transformation step via %define tool.xsltproc, which is accepted without...

CVE-2026-56389

GNU Bison allows for an execution of an arbitrary program during HTML report generation due to improper handling of grammar-defined configuration variables. A grammar file can override the executable used for the XML‑to‑HTML transformation step via %define tool.xsltproc, which is accepted without...

CVE-2026-56389

CVE-2026-56389 : GNU Bison suffers an arbitrary command execution in HTML report generation. The root cause is improper handling of grammar-defined configuration variables: a grammar file can override the executable used for the XML-to-HTML step via %define tool.xsltproc, which is passed directly...