CVE-2026-119723
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| HHVM |
≥ 0; < 23c061f4e804a51badd5f85227e65185651253b5 (affected, git)
Other versions: unaffected |
CNA: Meta |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.facebook.com/security/advisories/cve-2026-119723CNA: Meta · x_refsource_CONFIRM
- https://github.com/meta/hhvm/commit/23c061f4e804a51badd5f85227e65185651253b5CNA: Meta · x_refsource_MISC
- https://github.com/meta/hhvm/commit/23c061f4e804a51badd5f85227e65185651253b5[email protected]
- https://www.facebook.com/security/advisories/cve-2026-119723[email protected]
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