CVE-2022-35943Network attack vector

CSRF bypass via retained pre-login token

Published Aug 12, 2022 · Updated Apr 22, 2025

CSRF in CodeIgniter Shield 1.0.0-beta allows remote attackers to submit unintended requests from an attacker-controlled sibling subdomain. Session::startLogin retained old session data and did not force a fresh CSRF hash after login, leaving pre-login request state reusable. A victim must interact with attacker content on the controlled sibling subdomain; successful requests can alter application state but do not directly disclose data.

CVSS severity5.9
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in CodeIgniter Shield 1.0.0-beta allows remote attackers to submit unintended requests from an attacker-controlled sibling subdomain. Session::startLogin retained old session data and did not force a fresh CSRF hash after login, leaving pre-login request state reusable. A victim must interact with attacker content on the controlled sibling subdomain; successful requests can alter application state but do not directly disclose data.

The record

CVE
CVE-2022-35943
Published
Aug 12, 2022
Updated
Apr 22, 2025
Vendor
CodeIgniter Foundation
Product
CodeIgniter Shield
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=> 4.3.2, > v1.0.0-beta.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CodeIgniter Foundation · CodeIgniter Shieldversion=> 4.3.2, > v1.0.0-beta.2

Published CVSS scores

5.9GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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