CVE-2022-21647

highpriority · attend · 52EPSS 0.377 · 99 %ileEUUS
grimoire priorityP1 · Urgent
Exploitable?
—
no known exploitation
Likely / severe?
37.7% (99th) 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 2026-10-23

CodeIgniter is an open source PHP full-stack web framework. Deserialization of Untrusted Data was found in the `old()` function in CodeIgniter4. Remote attackers may inject auto-loadable arbitrary objects with this vulnerability, and possibly execute existing PHP code on the server. We are aware of a working exploit, which can lead to SQL injection. Users are advised to upgrade to v4.1.6 or later. Users unable to upgrade as advised to not use the `old()` function and form_helper nor `RedirectResponse::withInput()` and `redirect()->withInput()`.

01

cvss

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

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9
v3.17.7highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:Hsecondary · ENISA EU
v3.17.7highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:Hsecondary · security-advisories@github.comexploitability 2.2 · impact 5.5
v3.17.7highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:Hsecondary · OSV
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · 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-502USprimaryCWE-502US
04

affected products (4)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • GHSA-w6jr-wj64-mc9xDeserialization of Untrusted Data in Codeigniter42022-01-06ghsa · osvUS

    ### Impact Deserialization of Untrusted Data was found in the `old()` function in CodeIgniter4. Remote attackers may inject auto-loadable arbitrary objects with this vulnerability, and possibly execute existing PHP code on the server. We are aware of a working exploit, which can lead to SQL injection. ### Patches Upgrade to v4.1.6 or later. ### Workarounds Do not use: - `old()` and form_helper - `RedirectResponse::withInput()` and `redirect()->withInput()` ### References - [PHP Object Injection | OWASP](https://owasp.org/www-community/vulnerabilities/PHP_Object_Injection) ### 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-2022-216472024-03-06vendor · osvUS

    CodeIgniter is an open source PHP full-stack web framework. Deserialization of Untrusted Data was found in the `old()` function in CodeIgniter4. Remote attackers may inject auto-loadable arbitrary objects with this vulnerability, and possibly execute existing PHP code on the server. We are aware of a working exploit, which can lead to SQL injection. Users are advised to upgrade to v4.1.6 or later. Users unable to upgrade as advised to not use the `old()` function and form_helper nor `RedirectResponse::withInput()` and `redirect()->withInput()`.

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 2022-01-04modified 2026-06-17
09

references (7)

External citations — patches, advisories, analysis.

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