TI-2022-00154 Aliases CVE-2022-0217

XML external entity injection in prosody

MEDIUM 41CWE-776Published 2022-08-26 · Updated 2024-08-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-611 and the CVSS impact.

Summary

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).

Why it matters now

EPSS 0.05526 92nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	prosody	Fixed in prosody 0.11.12, Affects all versions with support for WebSockets.	—	No fix listed	CNA

prosody Vendor— Affected Fixed in prosody 0.11.12, Affects all versions with support for WebSockets. Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:prosody:prosody::::::::	before 0.11.12	Vulnerable	Prosody

cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:* Versions before 0.11.12 Vulnerable ·Prosody

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2022-0217

References

TI-2018-07663 Improper authentication in [UNKNOWN] prosody CVSS 3.0HIGH 8.8
TI-2014-02196 Prosody before 0.9.4 does not properly restrict the processing of compressed XML… CVSS 2.0HIGH 7.8
TI-2014-02195 plugins/mod_compression.lua in (1) Prosody before 0.9.4 and (2) Lightwitch Metronome… CVSS 2.0HIGH 7.8
TI-2026-31684 Resource allocation without limits in Prosody CVSS 3.1HIGH 7.5
TI-2026-31683 Memory leak in Prosody CVSS 3.1HIGH 7.5
TI-2021-15483 muc.lib.lua in Prosody 0.11.0 through 0.11.9 allows remote attackers to obtain sensitive… CVSS 3.1HIGH 7.5

See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences