Is there a public exploit for CVE-2026-119723?

No public exploit for CVE-2026-119723 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

What does CVE-2026-119723 affect?

CVE-2026-119723 affects Facebook HHVM.

— Unscored

When parsing request variables such as query-string and form parameters, HHVM did not check that appending a nested array succeeded before…

CVE-2026-119723

When parsing request variables such as query-string and form parameters, HHVM did not check that appending a nested array succeeded before descending into it. A remote, unauthenticated attacker could send a GET or POST request which would crash the HHVM server process before any application code runs, leading to denial of service. This issue affected HHVM prior to 23c061f4e804a51badd5f85227e65185651253b5.

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 11 November 2026
Last updated: 11 November 2026
Affected: Facebook · HHVM
Assigner: Meta

At the source

EUVD (ENISA)

References

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