How severe is CVE-2019-15521?

CVE-2019-15521 has a CVSS 3.x base score of 9.8, 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 high, and availability high.

Is CVE-2019-15521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15521?

CVE-2019-15521 primarily affects Spoon-library Spoon Library. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-15521?

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-2019-15521 published?

CVE-2019-15521 was published on 2019-08-26 and last updated on 2026-06-17.

CVE-2019-15521

CVE-2019-15521 is a critical-severity vulnerability in Spoon-library Spoon Library with a CVSS 3.x base score of 9.8. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Spoon-library Spoon Library
Published: 2019-08-26
Last modified: 2026-06-17

Description

Spoon Library through 2014-02-06, as used in Fork CMS before 1.4.1 and other products, allows PHP object injection via a cookie containing an object.

Frequently asked questions

What is CVE-2019-15521?: Spoon Library through 2014-02-06, as used in Fork CMS before 1.4.1 and other products, allows PHP object injection via a cookie containing an object.
How severe is CVE-2019-15521?: CVE-2019-15521 has a CVSS 3.x base score of 9.8, 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 high, and availability high.
Is CVE-2019-15521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15521?: CVE-2019-15521 primarily affects Spoon-library Spoon Library. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-15521?: 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-2019-15521 published?: CVE-2019-15521 was published on 2019-08-26 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:spoon-library:spoon_library:*:*:*:*:*:*:*:*
cpe:2.3:a:fork-cms:fork_cms:*:*:*:*:*:*:*:*

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