CVE-2020-7661

CVE-2020-7661 is a high-severity vulnerability in Url-regex Project Url-regex with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Description

all versions of url-regex are vulnerable to Regular Expression Denial of Service. An attacker providing a very long string in String.test can cause a Denial of Service.

Frequently asked questions

What is CVE-2020-7661?
all versions of url-regex are vulnerable to Regular Expression Denial of Service. An attacker providing a very long string in String.test can cause a Denial of Service.
How severe is CVE-2020-7661?
CVE-2020-7661 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-7661 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7661?
CVE-2020-7661 affects Url-regex Project Url-regex. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-7661?
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-2020-7661 published?
CVE-2020-7661 was published on 2020-06-04 and last updated on 2026-06-17.

References

Affected products (1)

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