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CVE-2020-1892
Insufficient boundary checks when decoding JSON in JSON_parser allows read access to out of bounds memory, potentially leading to…
High8.1EPSS 1.1%
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- Updated
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- Assigned by
Description
Insufficient boundary checks when decoding JSON in JSON_parser allows read access to out of bounds memory, potentially leading to information leak and DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.1% · top 34% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
Affected products
- affected 4.45.1
- affected 4.45.0
- affected 4.44.1
- affected 4.44.0
- affected 4.43.1
- affected 4.43.0
- affected 4.42.1
- affected 4.42.0
- affected 4.41.1
- affected 4.41.0
- affected 4.40.1
- affected 4.40.0
- affected 4.39.1
- affected 4.39.0
- affected 4.38.1
- affected 4.33.0 – < unspecified
- affected 4.32.1
- affected 4.9.0 – < unspecified
- affected 4.8.7
- affected unspecified – ≤ 4.8.6
References (2)
- https://hhvm.com/blog/2020/02/20/security-update.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/facebook/hhvm/commit/dabd48caf74995e605f1700344f1ff4a5d83441d (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-1892)Record last updated .