CVE-2022-45134Network attack vector

Remote code execution via unsafe XML deserialization

Published Aug 22, 2025 · Updated Aug 26, 2025

Unsafe deserialization in affected Mahara releases allows remote attackers to execute code by submitting a specially structured skin-import XML file. Mahara 21.10 before 21.10.6, 22.04 before 22.04.4, and 22.10 before 22.10.1 pass attacker-controlled skin XML into an unsafe deserialization operation. Public sources do not identify the deserialization routine or required account role; successful processing executes code on the server.

CVSS severity9.8
Critical
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in affected Mahara releases allows remote attackers to execute code by submitting a specially structured skin-import XML file. Mahara 21.10 before 21.10.6, 22.04 before 22.04.4, and 22.10 before 22.10.1 pass attacker-controlled skin XML into an unsafe deserialization operation. Public sources do not identify the deserialization routine or required account role; successful processing executes code on the server.

The record

CVE
CVE-2022-45134
Published
Aug 22, 2025
Updated
Aug 26, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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