CVE-2020-7660
Insecure serialization leading to RCE in serialize-javascript
8.1
HIGH
CVSS 3.1
EPSS 2.9%
Description
serialize-javascript prior to 3.1.0 allows remote attackers to inject arbitrary code via the function "deleteFunctions" within "index.js". An object such as `{"foo": /1"/, "bar": "a\"@__R-<UID>-0__@"}` was serialized as `{"foo": /1"/, "bar": "a\/1"/}`, which allows an attacker to escape the `bar` key. This requires the attacker to control the values of both `foo` and `bar` and guess the value of `<UID>`. The UID has a keyspace of approximately 4 billion making it a realistic network attack.
How to fix CVE-2020-7660
To remediate CVE-2020-7660, upgrade the affected package to a fixed version below.
- —upgrade to 3.1.0 or later
Is CVE-2020-7660 being exploited?
Low — EPSS is 2.9%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.1.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |