How severe is CVE-2019-16699?

CVE-2019-16699 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-2019-16699 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16699?

CVE-2019-16699 affects Sr Freecap Project Sr Freecap. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-16699?

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-2019-16699 published?

CVE-2019-16699 was published on 2019-10-16 and last updated on 2026-06-17.

CVE-2019-16699

CVE-2019-16699 is a critical-severity vulnerability in Sr Freecap Project Sr Freecap 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Sr Freecap Project Sr Freecap
Published: 2019-10-16
Last modified: 2026-06-17

Description

The sr_freecap (aka freeCap CAPTCHA) extension 2.4.5 and below and 2.5.2 and below for TYPO3 fails to sanitize user input, which allows execution of arbitrary Extbase actions, resulting in Remote Code Execution.

Frequently asked questions

What is CVE-2019-16699?: The sr_freecap (aka freeCap CAPTCHA) extension 2.4.5 and below and 2.5.2 and below for TYPO3 fails to sanitize user input, which allows execution of arbitrary Extbase actions, resulting in Remote Code Execution.
How severe is CVE-2019-16699?: CVE-2019-16699 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-2019-16699 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16699?: CVE-2019-16699 affects Sr Freecap Project Sr Freecap. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-16699?: 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-2019-16699 published?: CVE-2019-16699 was published on 2019-10-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sr_freecap_project:sr_freecap:*:*:*:*:*:*:*:*

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