CVE-2021-45470

CVE-2021-45470 is a high-severity vulnerability in Circl Cve-search 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-1333.

Key facts

Description

lib/DatabaseLayer.py in cve-search before 4.1.0 allows regular expression injection, which can lead to ReDoS (regular expression denial of service) or other impacts.

Frequently asked questions

What is CVE-2021-45470?
lib/DatabaseLayer.py in cve-search before 4.1.0 allows regular expression injection, which can lead to ReDoS (regular expression denial of service) or other impacts.
How severe is CVE-2021-45470?
CVE-2021-45470 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-2021-45470 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45470?
CVE-2021-45470 affects Circl Cve-search. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45470?
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-2021-45470 published?
CVE-2021-45470 was published on 2021-12-23 and last updated on 2026-06-17.

References

Affected products (1)

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