HOMEVULNERABILITIESCVE-2024-39702
MEDIUM

CVE-2024-39702

CWE-407Published: July 23, 2024· Updated: Jun 17, 2026

5.9
CVSS v3.1

Official Description

In lj_str_hash.c in OpenResty 1.19.3.1 through 1.25.3.1, the string hashing function (used during string interning) allows HashDoS (Hash Denial of Service) attacks. An attacker could cause excessive resource usage during proxy operations via crafted requests, potentially leading to a denial of service with relatively few incoming requests. This vulnerability only exists in the OpenResty fork in the openresty/luajit2 GitHub repository. The LuaJIT/LuaJIT repository. is unaffected.

NVD Source

Technical Analysis

CVE-2024-39702 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

openresty1 product(s)
openresty
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://openresty.org/en/ann-1025003002.html
PATCHhttps://openresty.org/en/ann-1025003002.html

All References (2)

→
https://openresty.org/en/ann-1025003002.htmlPatch
→
https://openresty.org/en/ann-1025003002.htmlPatch

Quick Facts

CVE IDCVE-2024-39702
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-407
CISA KEVNo
Affected1 vendor(s)
PublishedJul 23, 2024

Related CVEs (CWE-407)

CVE-2026-57480
8.7
CVE-2026-58226
8.7
CVE-2026-54892
8.7
CVE-2026-55206
8.7
CVE-2026-43967
8.7
CVE-2026-48511
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2024-39702 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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