GHSA-x5mq-jjr3-vmx6
MEDIUMMissing validation of header name and value in codeigniter4/framework
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
codeigniter4/frameworkReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Impact
Lack of proper header validation for its name and value. The potential attacker can construct deliberately malformed headers with Header class. This could disrupt application functionality, potentially causing errors or generating invalid HTTP requests. In some cases, these malformed requests might lead to a DoS scenario if a remote service’s web application firewall interprets them as malicious and blocks further communication with the application.
Patches
Upgrade to v4.5.8 or later.
Workarounds
Validate HTTP header keys and/or values if using user-supplied values before passing them to Header class.
Differences from CVE-2023-29197
-
Affected Software:
- CVE-2023-29197 specifically addresses a vulnerability in the
guzzlehttp/psr7library. - The reported issue in this Security Advisory is within the CodeIgniter4 framework and does not depend on or use the
guzzlehttp/psr7library.
- CVE-2023-29197 specifically addresses a vulnerability in the
-
Root Cause and Implementation:
- The vulnerability reported arises from an issue in the Header class of CodeIgniter4, which is unrelated to the functionality or implementation of
guzzlehttp/psr7.
- The vulnerability reported arises from an issue in the Header class of CodeIgniter4, which is unrelated to the functionality or implementation of
-
Scope of Impact:
- The vulnerability described in this Security Advisory affects applications built with the CodeIgniter4 framework, which does not use or rely on the
guzzlehttp/psr7library.
- The vulnerability described in this Security Advisory affects applications built with the CodeIgniter4 framework, which does not use or rely on the
References
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | codeigniter4/framework | all versions | 4.5.8 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for codeigniter4/framework. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update codeigniter4/framework to 4.5.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x5mq-jjr3-vmx6 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-x5mq-jjr3-vmx6 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-x5mq-jjr3-vmx6. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-x5mq-jjr3-vmx6 in your dependencies?
O3 detects GHSA-x5mq-jjr3-vmx6 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.