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Fencer Vulns
high 7.3

CVE-2021-23792 json

XML External Entity (XXE) Injection

published 2022-05-06 4 y ago modified 2026-09-10 1 mo ago also GHSA-pjch-4g28-fxx7 , EUVD-2022-4783

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven com.twelvemonkeys.imageio:imageio-metadata 3.7.1
  • n/a com.twelvemonkeys.imageio:imageio-metadata 3.7.1
  • libtwelvemonkeys-java Debian 14, Debian 13, Debian 12 3.8.0-1

debian advisories DEBIAN-CVE-2021-23792

Exploit prediction

1.07% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven com.twelvemonkeys.imageio:imageio-metadata
<3.7.1
3.7.1

Affected products

  • n/a com.twelvemonkeys.imageio:imageio-metadata

Classification

Weakness
  • CWE-611 Improper Restriction of XML External Entity Reference

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.