What is CVE-2022-0323?

CVE-2022-0323 is a high-severity vulnerability in Bobthecow Bobthecow/mustache.php, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.8/10. Published 2022-01-21.

How severe is CVE-2022-0323?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2022-0323 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Bobthecow Bobthecow/mustache.php

CVE-2022-0323

Improper Neutralization of Special Elements Used in a Template Engine in Packagist mustache/mustache prior to 2.14.1.

Published 2022-01-21 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.007 (50.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Bobthecow Bobthecow/mustache.php — versions unspecified
Mustache Project

Weakness classification (CWE)

Public proof-of-concept exploits

References

huntr.dev/bounties/a5f5a988-aa52-4443-839d-299a63f44fb7 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/bobthecow/mustache.php/commit/579ffa5c96e1d292c060b3dd62811ff01ad8c2… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0323?: CVE-2022-0323 is a high-severity vulnerability in Bobthecow Bobthecow/mustache.php, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.8/10. Published 2022-01-21.
How severe is CVE-2022-0323?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-0323 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.