Advisory details:
github_osv / GHSA-8p2x-5cpm-qrqw
| Advisory ID | github_osv/GHSA-8p2x-5cpm-qrqw |
| Aliases |
CVE-2026-33690
|
| Summary | AVideo vulnerable to IP Address Spoofing via Untrusted HTTP Headers in getRealIpAddr() ## 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` ```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 1. Attacker sends request with forged header: ``` X-Client-IP: 127.0.0.1 ``` or ``` X-Real-IP: 192.168.1.1 ``` 2. `getRealIpAddr()` returns the forged IP 3. Any IP-based rate limiting, access control, or audit log that relies on this function is bypassed ## Proof of Concept ```bash 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 |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 4.8 |
| Risk | 2.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| CWE-348 | Use of Less Trusted Source |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 5.3 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-8p2x-5cpm-qrqw/GHSA-8p2x-5cpm-qrqw.json |
| generic_textual | MODERATE |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/WWBN/AVideo | ||
| 1a1df6a9377e5cc67d1d0ac8ef571f7abbffbc6c | Other | https://github.com/WWBN/AVideo/commit/1a1df6a9377e5cc67d1d0ac8ef571f7abbffbc6c |
| CVE-2026-33690 | https://nvd.nist.gov/vuln/detail/CVE-2026-33690 | |
| GHSA-8p2x-5cpm-qrqw | Other | https://github.com/WWBN/AVideo/security/advisories/GHSA-8p2x-5cpm-qrqw |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-24T18:36:08Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/33xxx/CVE-2026-33690.json
Source Advisory: vulnrichment/CVE-2026-33690
[{'Exploitation': 'poc'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]