Deserialization in Themeisle Otter

CVE-2023-2288

The Otter WordPress plugin before 2.2.6 does not sanitize some user-controlled file paths before performing file operations on them. This leads to a PHAR deserialization vulnerability on PHP < 8.0 using the phar:// stream wrapper.

Vulnerability class: Insecure Deserialization

EPSS: 0.180 (96.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-2288?
CVE-2023-2288 is a high-severity vulnerability in Themeisle Otter, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2023-05-30.
How severe is CVE-2023-2288?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-2288 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.