THREATPORT/VULNERABILITY/CVE-2022-21647
HIGH SEVERITY

CVE-2022-21647

Codeigniter vulnerability

CVSS
7.7
EPSS
37.7%
EPSS pct
98th
Exploited
No known
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()`.
Affected vendor
Codeigniter
Affected product
Codeigniter
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H
Weakness type (CWE)
  • CWE-502 — Deserialization of Untrusted Data
Published
2022-01-04

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 37.7% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2022-21647

  • Confirm whether Codeigniter Codeigniter is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2022-21647.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-21647

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2022-21647 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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