CVE-2020-1898 | BDVDB-2026-150268 Detail

Description#

The fb_unserialize function did not impose a depth limit for nested deserialization. That meant a maliciously constructed string could cause deserialization to recurse, leading to stack exhaustion. This issue affected HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12021-03-11Record published in the CVE List.
2. Version 22024-08-04Most recent update recorded in the CVE List.