How severe is CVE-2016-9180?

CVE-2016-9180 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2016-9180 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9180?

CVE-2016-9180 affects Xmltwig Xml-twig For Perl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-9180?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-9180 published?

CVE-2016-9180 was published on 2016-12-22 and last updated on 2026-06-17.

CVE-2016-9180

CVE-2016-9180 is a critical-severity vulnerability in Xmltwig Xml-twig For Perl with a CVSS 3.x base score of 9.1. 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-611.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Xmltwig Xml-twig For Perl
Published: 2016-12-22
Last modified: 2026-06-17

Description

perl-XML-Twig: The option to `expand_external_ents`, documented as controlling external entity expansion in XML::Twig does not work. External entities are always expanded, regardless of the option's setting.

Frequently asked questions

What is CVE-2016-9180?: perl-XML-Twig: The option to `expand_external_ents`, documented as controlling external entity expansion in XML::Twig does not work. External entities are always expanded, regardless of the option's setting.
How severe is CVE-2016-9180?: CVE-2016-9180 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2016-9180 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9180?: CVE-2016-9180 affects Xmltwig Xml-twig For Perl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-9180?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-9180 published?: CVE-2016-9180 was published on 2016-12-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xmltwig:xml-twig_for_perl:-:*:*:*:*:*:*:*

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