How severe is CVE-2021-23718?

CVE-2021-23718 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-23718 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23718?

CVE-2021-23718 affects Ssrf-agent Project Ssrf-agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23718?

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

When was CVE-2021-23718 published?

CVE-2021-23718 was published on 2021-11-22 and last updated on 2026-06-17.

CVE-2021-23718

CVE-2021-23718 is a medium-severity vulnerability in Ssrf-agent Project Ssrf-agent with a CVSS 3.x base score of 6.5. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Ssrf-agent Project Ssrf-agent
Published: 2021-11-22
Last modified: 2026-06-17

Description

The package ssrf-agent before 1.0.5 are vulnerable to Server-side Request Forgery (SSRF) via the defaultIpChecker function. It fails to properly validate if the IP requested is private.

Frequently asked questions

What is CVE-2021-23718?: The package ssrf-agent before 1.0.5 are vulnerable to Server-side Request Forgery (SSRF) via the defaultIpChecker function. It fails to properly validate if the IP requested is private.
How severe is CVE-2021-23718?: CVE-2021-23718 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-23718 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23718?: CVE-2021-23718 affects Ssrf-agent Project Ssrf-agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23718?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-23718 published?: CVE-2021-23718 was published on 2021-11-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ssrf-agent_project:ssrf-agent:*:*:*:*:*:node.js:*:*

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