CVE-2023-4540
DoS in lua-http library
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop.
This issue affects lua-http: all versions before commit ddab283.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop.
This issue affects lua-http: all versions before commit ddab283.
- Record
CVE-2023-4540- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-755
- Updated
- 2026-11-02
CVE List
DoS in lua-http library
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop.
This issue affects lua-http: all versions before commit ddab283.
- Record
CVE-2023-4540- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-755
- Updated
- 2026-11-02
EUVDEUVD-2023-54395
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop.
This issue affects lua-http: all versions before commit ddab283.
- Record
EUVD-2023-54395- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-947g-gmvh-r5rp
Improper Handling of Exceptional Conditions vulnerability in Daurnimator HTTP Library for Lua...
Improper Handling of Exceptional Conditions vulnerability in Daurnimator HTTP Library for Lua allows Excessive Allocation.This issue affects HTTP Library for Lua: before commit ddab283.
- Record
GHSA-947g-gmvh-r5rp- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-755, CWE-835
- Updated
- 2026-11-02
OSVALPINE-CVE-2023-4540
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop.
This issue affects lua-http: all versions before commit ddab283.
- Record
ALPINE-CVE-2023-4540- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
OSV
DoS in lua-http library
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop.
This issue affects lua-http: all versions before commit ddab283.
- Record
CVE-2023-4540- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-755
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2023-4540
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop. This issue affects lua-http: all versions before commit ddab283.
- Record
DEBIAN-CVE-2023-4540- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-4540
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop. This issue affects lua-http: all versions before commit ddab283.
- Record
UBUNTU-CVE-2023-4540- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
lua-httpAlpine:v3.17 | before 0.4-r2 | 0.4-r2 |
lua-httpAlpine:v3.18 | before 0.4-r2 | 0.4-r2 |
lua-httpAlpine:v3.19 | before 0.4-r2 | 0.4-r2 |
lua-httpAlpine:v3.20 | before 0.4-r2 | 0.4-r2 |
lua-httpAlpine:v3.21 | before 0.4-r2 | 0.4-r2 |
lua-httpAlpine:v3.22 | before 0.4-r2 | 0.4-r2 |
lua-httpAlpine:v3.23 | before 0.4-r2 | 0.4-r2 |
lua-httpAlpine:v3.24 | before 0.4-r2 | 0.4-r2 |
lua-httpDebian:12 | All versions, plus listed versions 0.4-10.4-20.4-3 | None known |
lua-httpDebian:13 | before 0.4-2 | 0.4-2 |
Show 8 moreShow less
| Package | Affected | Fixed |
|---|---|---|
lua-httpDebian:14 | before 0.4-2 | 0.4-2 |
lua-httpUbuntu:18.04:LTS | All versions, plus listed versions 0.1-3 | None known |
lua-httpUbuntu:20.04:LTS | All versions, plus listed versions 0.1-30.3-1 | None known |
lua-httpUbuntu:22.04:LTS | All versions, plus listed versions 0.4-1 | None known |
lua-httpUbuntu:24.04:LTS | All versions, plus listed versions 0.4-1 | None known |
lua-httpUbuntu:25.10 | All versions, plus listed versions 0.4-10.4-2 | None known |
lua-httpUbuntu:26.10 | All versions, plus listed versions 0.4-3 | None known |
lua-httpUbuntu:26.04:LTS | All versions, plus listed versions 0.4-20.4-3 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-4540 is a high vulnerability (CVSS 7.5) in Daurnimator Lua-http, published September 5, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.09%, the 65th percentile. Fixed in lua-http 0.4-r2.