CVE-2026-33690 is a medium-severity (CVSS 5.3) CWE-348 vulnerability in wwbn/avideo. No vendor fix is recorded yet; mitigation options are listed below.
AVideo vulnerable to IP Address Spoofing via Untrusted HTTP Headers in getRealIpAddr()
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-33690.
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.
How urgent is this, really
CVE-2026-33690 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,156 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
wwbn/avideoReal-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
Summary
The getRealIpAddr() function in objects/functions.php trusts user-controlled HTTP headers to determine the client's IP address.
An attacker can spoof their IP address by sending forged headers, bypassing any IP-based access controls or audit logging.
Vulnerable Code
File: objects/functions.php
$headers = [
'HTTP_X_REAL_IP',
'HTTP_CLIENT_IP',
'HTTP_X_FORWARDED_FOR',
'REMOTE_ADDR'
];
foreach ($headers as $header) {
if (!empty($_SERVER[$header])) {
$ips = explode(',', $_SERVER[$header]);
foreach ($ips as $ipCandidate) {
$ipCandidate = trim($ipCandidate);
if (filter_var($ipCandidate, FILTER_VALIDATE_IP,
FILTER_FLAG_IPV4)) {
return $ipCandidate;
}
}
}
}
Attack Scenario
- Attacker sends request with forged header:
X-Client-IP: 127.0.0.1
or
X-Real-IP: 192.168.1.1
getRealIpAddr()returns the forged IP- Any IP-based rate limiting, access control, or audit log that relies on this function is bypassed
Proof of Concept
curl -H "X-Client-IP: 127.0.0.1" \
https://target.com/any_endpoint.php
The server now believes the request came from localhost.
Impact
- Bypass IP-based rate limiting
- Bypass IP-based access controls
- Forge audit log entries
- Potential privilege escalation if localhost is trusted
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | wwbn/avideo | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for wwbn/avideo, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of wwbn/avideo has shipped for CVE-2026-33690 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-33690 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-33690. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-33690 in your dependencies?
O3 Security finds CVE-2026-33690 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.