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CVE-2021-23792

XML External Entity (XXE) Injection

7.3 HighFix available

The package com.twelvemonkeys.imageio:imageio-metadata before 3.7.1 are vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

1.07%Up 0.2 points since May 8, 2022
90%50%10%1%

What each source reports

CVE List Score used 7.3

XML External Entity (XXE) Injection

The package com.twelvemonkeys.imageio:imageio-metadata before 3.7.1 are vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Record
CVE-2021-23792
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02
EUVDEUVD-2022-4783 7.3

The package com.twelvemonkeys.imageio:imageio-metadata before 3.7.1 are vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Record
EUVD-2022-4783
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-pjch-4g28-fxx7 9.8

External Entity Reference in TwelveMonkeys ImageIO

The package com.twelvemonkeys.imageio:imageio-metadata before version 3.7.1 is vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Record
GHSA-pjch-4g28-fxx7
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-611
Updated
2026-11-02
NVD 7.3

The package com.twelvemonkeys.imageio:imageio-metadata before 3.7.1 are vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Record
CVE-2021-23792
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-611
Updated
2026-11-02
OSV 9.8

The package com.twelvemonkeys.imageio:imageio-metadata before 3.7.1 are vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Record
CVE-2021-23792
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-23792 9.8

The package com.twelvemonkeys.imageio:imageio-metadata before 3.7.1 are vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Record
DEBIAN-CVE-2021-23792
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-pjch-4g28-fxx7 9.8

External Entity Reference in TwelveMonkeys ImageIO

The package com.twelvemonkeys.imageio:imageio-metadata before version 3.7.1 is vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Record
GHSA-pjch-4g28-fxx7
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-611
Updated
2026-11-02
OSVUBUNTU-CVE-2021-23792 7.3

The package com.twelvemonkeys.imageio:imageio-metadata before 3.7.1 are vulnerable to XML External Entity (XXE) Injection due to an insecurely initialized XML parser for reading XMP Metadata. An attacker can exploit this vulnerability if they are able to supply a file (e.g. when an online profile picture is processed) with a malicious XMP segment. If the XMP metadata of the uploaded image is parsed, then the XXE vulnerability is triggered.

Record
UBUNTU-CVE-2021-23792
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
com.twelvemonkeys.imageio:imageio-metadata
Maven
 before 3.7.1
3.7.1
libtwelvemonkeys-java
Debian:12
 before 3.8.0-1
3.8.0-1
libtwelvemonkeys-java
Debian:13
 before 3.8.0-1
3.8.0-1
libtwelvemonkeys-java
Debian:14
 before 3.8.0-1
3.8.0-1
com.twelvemonkeys.imageio:imageio-metadata
Maven
 before 3.7.1, plus listed versions
3.03.0-rc53.0-rc73.0.13.0.2
Show 19 moreShow less
3.1.03.1.13.1.23.23.2.13.33.3.13.3.23.43.4.13.4.23.4.33.53.63.6.13.6.23.6.33.6.43.7.0
3.7.1
libtwelvemonkeys-java
Ubuntu:18.04:LTS
 All versions, plus listed versions
3.3.2-2
 None known
libtwelvemonkeys-java
Ubuntu:20.04:LTS
 All versions, plus listed versions
3.4.1-13.4.2-13.5-1
 None known
libtwelvemonkeys-java
Ubuntu:22.04:LTS
 All versions, plus listed versions
3.6.3-13.7.0-13.8.0-13.8.1-1
 None known
libtwelvemonkeys-java
Ubuntu:24.04:LTS
 All versions, plus listed versions
3.9.4-1
 None known
libtwelvemonkeys-java
Ubuntu:25.10
 All versions, plus listed versions
3.11.0+dfsg-2
 None known
libtwelvemonkeys-java
Ubuntu:26.10
 All versions, plus listed versions
3.11.0+dfsg-2
 None known
libtwelvemonkeys-java
Ubuntu:26.04:LTS
 All versions, plus listed versions
3.11.0+dfsg-2
 None known

History

History
RecordedChangedSources
facts
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-23792 is a high vulnerability (CVSS 7.3) in Twelvemonkeys Project Twelvemonkeys, published May 6, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.07%, the 65th percentile. Fixed in com.twelvemonkeys.imageio:imageio-metadata 3.7.1.

References

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