What is CVE-2022-45134?

CVE-2022-45134 is a critical-severity vulnerability in Mahara, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-08-22.

How severe is CVE-2022-45134?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-45134 known to be exploited?

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

Deserialization in Mahara

CVE-2022-45134

Mahara 21.10 before 21.10.6, 22.04 before 22.04.4, and 22.10 before 22.10.1 deserializes user input unsafely during skin import. A particularly structured XML file could cause code execution when being processed.

Vulnerability class: Insecure Deserialization

EPSS: 0.006 (43.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mahara
N/a — versions n/a

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

cve@mitre.org (Issue Tracking, Vendor Advisory)
cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2022-45134?: CVE-2022-45134 is a critical-severity vulnerability in Mahara, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-08-22.
How severe is CVE-2022-45134?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-45134 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.