How severe is CVE-2011-2205?

CVE-2011-2205 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-2205 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2205?

CVE-2011-2205 primarily affects Prosody. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2205?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-2205 published?

CVE-2011-2205 was published on 2011-06-22 and last updated on 2026-06-16.

CVE-2011-2205

CVE-2011-2205 is a medium-severity vulnerability in Prosody with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Prosody
Published: 2011-06-22
Last modified: 2026-06-16

Description

Prosody before 0.8.1 does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

Frequently asked questions

What is CVE-2011-2205?: Prosody before 0.8.1 does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.
How severe is CVE-2011-2205?: CVE-2011-2205 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-2205 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2205?: CVE-2011-2205 primarily affects Prosody. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2205?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-2205 published?: CVE-2011-2205 was published on 2011-06-22 and last updated on 2026-06-16.

References

Affected products (16)

cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.1.0:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.2.0:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.4.0:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.4.2:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.5.2:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.6:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.6.1:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.7:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:prosody:prosody:0.8:*:*:*:*:*:*:*

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