How severe is CVE-2024-33452?

CVE-2024-33452 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2024-33452 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33452?

CVE-2024-33452 affects Openresty Lua-nginx-module. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-33452?

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.

Does CVE-2024-33452 have an EU (EUVD) identifier?

Yes. CVE-2024-33452 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31190.

When was CVE-2024-33452 published?

CVE-2024-33452 was published on 2025-04-22 and last updated on 2026-06-17.

CVE-2024-33452

CVE-2024-33452 is a high-severity vulnerability in Openresty Lua-nginx-module with a CVSS 3.x base score of 7.7. 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-444.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31190
Weakness: CWE-444
Affected product: Openresty Lua-nginx-module
Published: 2025-04-22
Last modified: 2026-06-17

Description

An issue in OpenResty lua-nginx-module v.0.10.26 and before allows a remote attacker to conduct HTTP request smuggling via a crafted HEAD request.

Frequently asked questions

What is CVE-2024-33452?: An issue in OpenResty lua-nginx-module v.0.10.26 and before allows a remote attacker to conduct HTTP request smuggling via a crafted HEAD request.
How severe is CVE-2024-33452?: CVE-2024-33452 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2024-33452 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33452?: CVE-2024-33452 affects Openresty Lua-nginx-module. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-33452?: 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.
Does CVE-2024-33452 have an EU (EUVD) identifier?: Yes. CVE-2024-33452 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31190.
When was CVE-2024-33452 published?: CVE-2024-33452 was published on 2025-04-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openresty:lua-nginx-module:*:*:*:*:*:*:*:*

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