CVE-2022-23556

highpriority · track · 30OT risk · elevatedEPSS 0.004 · 34 %ileEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.40% (34th) EPSS
CVSS 7.5 · high
Is it mine?
4 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

CodeIgniter is a PHP full-stack web framework. This vulnerability may allow attackers to spoof their IP address when the server is behind a reverse proxy. This issue has been patched, please upgrade to version 4.2.11 or later, and configure `Config\App::$proxyIPs`. As a workaround, do not use `$request->getIPAddress()`.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.17highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:Lsecondary · ENISA EU
v3.17highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:Lsecondary · security-advisories@github.comexploitability 2.2 · impact 4.7
v3.17highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:Lsecondary · OSV
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-345USCWE-345US
04

affected products (4)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • GHSA-ghw3-5qvm-3mqcCodeIgniter4 allows spoofing of IP address when using proxy2022-12-22ghsa · osvUS

    ### Impact This vulnerability may allow attackers to spoof their IP address when your server is behind a reverse proxy. ### Patches Upgrade to v4.2.11 or later, and configure `Config\App::$proxyIPs`. ### Workarounds Do not use `$request->getIPAddress()`. ### References - https://codeigniter4.github.io/userguide/incoming/request.html#CodeIgniter\HTTP\Request::getIPAddress ### For more information If you have any questions or comments about this advisory: * Open an issue in [codeigniter4/CodeIgniter4](https://github.com/codeigniter4/CodeIgniter4/issues) * Email us at [SECURITY.md](https://github.com/codeigniter4/CodeIgniter4/blob/develop/SECURITY.md)

  • BIT-codeigniter-2022-235562024-03-06vendor · osvUS

    CodeIgniter is a PHP full-stack web framework. This vulnerability may allow attackers to spoof their IP address when the server is behind a reverse proxy. This issue has been patched, please upgrade to version 4.2.11 or later, and configure `Config\App::$proxyIPs`. As a workaround, do not use `$request->getIPAddress()`.

06

also known as (5)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvnvdNVDCVE.orgMITRE
published 2022-12-22modified 2026-06-17
08

references (7)

External citations — patches, advisories, analysis.

scry

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