How severe is CVE-2016-0756?

CVE-2016-0756 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2016-0756 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-2016-0756?

CVE-2016-0756 affects Prosody. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-0756?

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

When was CVE-2016-0756 published?

CVE-2016-0756 was published on 2016-01-29 and last updated on 2026-06-17.

CVE-2016-0756

CVE-2016-0756 is a medium-severity vulnerability in Prosody with a CVSS 3.x base score of 5.3. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Prosody
Published: 2016-01-29
Last modified: 2026-06-17

Description

The generate_dialback function in the mod_dialback module in Prosody before 0.9.10 does not properly separate fields when generating dialback keys, which allows remote attackers to spoof XMPP network domains via a crafted stream id and domain name that is included in the target domain as a suffix.

Frequently asked questions

What is CVE-2016-0756?: The generate_dialback function in the mod_dialback module in Prosody before 0.9.10 does not properly separate fields when generating dialback keys, which allows remote attackers to spoof XMPP network domains via a crafted stream id and domain name that is included in the target domain as a suffix.
How severe is CVE-2016-0756?: CVE-2016-0756 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2016-0756 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-2016-0756?: CVE-2016-0756 affects Prosody. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-0756?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-0756 published?: CVE-2016-0756 was published on 2016-01-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:*

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