How severe is CVE-2019-19191?

CVE-2019-19191 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-19191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-19191?

CVE-2019-19191 affects Shibboleth Service Provider. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-19191?

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

When was CVE-2019-19191 published?

CVE-2019-19191 was published on 2019-11-21 and last updated on 2026-06-17.

CVE-2019-19191

CVE-2019-19191 is a high-severity vulnerability in Shibboleth Service Provider with a CVSS 3.x base score of 7.8. 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-59.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Shibboleth Service Provider
Published: 2019-11-21
Last modified: 2026-06-17

Description

Shibboleth Service Provider (SP) 3.x before 3.1.0 shipped a spec file that calls chown on files in a directory controlled by the service user (the shibd account) after installation. This allows the user to escalate to root by pointing symlinks to files such as /etc/shadow.

Frequently asked questions

What is CVE-2019-19191?: Shibboleth Service Provider (SP) 3.x before 3.1.0 shipped a spec file that calls chown on files in a directory controlled by the service user (the shibd account) after installation. This allows the user to escalate to root by pointing symlinks to files such as /etc/shadow.
How severe is CVE-2019-19191?: CVE-2019-19191 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-19191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-19191?: CVE-2019-19191 affects Shibboleth Service Provider. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-19191?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-19191 published?: CVE-2019-19191 was published on 2019-11-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:shibboleth:service_provider:*:*:*:*:*:*:*:*

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