CVE-2022-0217

7.5 HIGH 6% exploit odds Fix listed Other Library

What it is

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).

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 5.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2022-08-26 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 04:20 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 5.5% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2022-08-26 18:15 UTC
Last modified: 2026-06-17 04:20 UTC
Exploit probability: 5.5% · EPSS, next 30 days
Weakness: CWE-776
Record status: Modified

Affected

Prosody < 0.11.12

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2022-0217.md and follow it. Check whether this project is affected by CVE-2022-0217. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record