7.7

CVE-2024-33452: openresty lua-nginx-module HTTP Request/Response Smuggling

CVSS: 7.7v3.1HighModified
AliasesUBUNTU-CVE-2024-33452DEBIAN-CVE-2024-33452
Published 22-04-2025Last modified 03-11-2025
Open JSON

Vulnerability summary

CVE-2024-33452 is a high (CVSS 7.7) HTTP Request/Response Smuggling vulnerability in openresty lua-nginx-module. EPSS estimates a 0.84% chance of exploitation in the next 30 days, higher than 57% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
41/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.7/10
010
High · v3.1 (CVE.org)
EPSS score
0.84%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Advisory lineage

Upstream 0 · Downstream 1
DLA-4228-1

Timeline

  1. 22-04-2025
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.84%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

+0.03 pp

From 0.81% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.84%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (portswigger.net)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (benasin.space)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Ubuntu3 products
  • lua-nginx-memcachedAll versions (No fix recorded)
  • lua-nginx-redisAll versions (No fix recorded)
  • lua-nginx-websocketAll versions (No fix recorded)
Debian2 products
  • libnginx-mod-http-lua< 1:0.10.23-1+deb12u1 | < 1:0.10.27-1
  • nginx< 1.22.0-3
Openresty1 product

3 vendors · 6 products

References

6 links