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No exploitation reportedFix available

CVE-2022-0217

No exploitation reported by the sources we read.

  • Published2022-08-26
  • Fixed in0.11.12
  • WeaknessCWE-611 · CWE-776

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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).

Timeline

dates in UTC
  1. 2022-08-2618:15CVE publishedNVD

Versions per branch

NVD
Prosody
BranchAffectedFixed in
0.11< 0.11.120.11.12

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • prosodyUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • prosodyUbuntu:26.10all versions · no fixed version listed
  • prosodyUbuntu:26.04:LTSall versions · no fixed version listed
  • prosodyUbuntu:25.10all versions · no fixed version listed
  • prosodyUbuntu:24.04:LTSall versions · no fixed version listed
  • prosodyUbuntu:22.04:LTSall versions · no fixed version listed
  • prosodyUbuntu:20.04:LTSall versions · no fixed version listed
  • prosodyUbuntu:16.04:LTSall versions · no fixed version listed

19 more package ranges on OSV.dev

Vendor advisories

  • CVE-2022-0217 Red Hat Product Security

    prosody: unauthenticated remote Denial of Service Attack

Full record on NVD

Fix

  1. Update Prosody to 0.11.12

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • CNAweakness (CWE)CWE-776known since 2026-10-23
  • NVDweakness (CWE)CWE-611, CWE-776read 2026-10-23
  • FIRST EPSSEPSS score5.5 %2026-11-08
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2022-08-26
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2022-0217?

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).

Is CVE-2022-0217 actively exploited?

Active exploitation of CVE-2022-0217 has not been confirmed. Its EPSS score was 5.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-0217?

CVE-2022-0217 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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