CVE-2022-0217

Name: CVE-2022-0217
Creator: NVD / NIST
Published: 2022-08-26T18:15:08.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.40%

Last modified Jun 17, 2026

CVE-2022-0217 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. It was discovered that an internal Prosody library to load XML based on libexpat does not properly restrict the XML features allowed in parsed XML data. Given suitable attacker input, this results in expansion of recursive entity references from DTDs (CWE-776). EPSS estimates a 4.40% chance of exploitation in the next 30 days.

Description

It was discovered that an internal Prosody library to load XML based on libexpat does not properly restrict the XML features allowed in parsed XML data. Given suitable attacker input, this results in expansion of recursive entity references from DTDs (CWE-776). In addition, depending on the libexpat version used, it may also allow injections using XML External Entity References (CWE-611).

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

4.40%

90.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Prosody	Prosody	< 0.11.12

References

https://bugzilla.redhat.com/show_bug.cgi?id=2040639Issue Tracking, Third Party Advisory
https://prosody.im/security/advisory_20220113/Exploit, Patch, Vendor Advisory
https://prosody.im/security/advisory_20220113/1.patchPatch, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2040639Issue Tracking, Third Party Advisory
https://prosody.im/security/advisory_20220113/Exploit, Patch, Vendor Advisory
https://prosody.im/security/advisory_20220113/1.patchPatch, Vendor Advisory

Timeline

Published: Aug 26, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-0217?

How severe is CVE-2022-0217?

CVE-2022-0217 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.40% probability of exploitation in the next 30 days.

How do I fix CVE-2022-0217?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-0217?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST