CVE-2026-6103 | BDVDB-2026-379049 Detail
PHP GroupPHP
Description#
phar_tar_number() parses the octal size field of a TAR header into a uint32_t with no overflow check. The field is 11 octal digits wide and holds values up to 0x1FFFFFFFF, so a size above 0xFFFFFFFF silently wraps. The parser then skips the wrong number of data blocks and interprets attacker-controlled file content as the next TAR header, which lets a crafted archive inject entries that PharData reports and extracts as if they were genuine.
Impact#
CAPEC-92 Forced Integer Overflow
Weaknesses#
- CWE-190 Integer Overflow or Wraparound
References#
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.