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Not in CISA KEV
HIGH severity

CVE-2026-33512 — wwbn/avideo

HIGHFix: WWBN/AVideo@3fdeece

CVE-2026-33512 is a high-severity (CVSS 7.5) Improper Authentication vulnerability in wwbn/avideo. No vendor fix is recorded yet; mitigation options are listed below.

AVideo has an unauthenticated decrypt oracle leaking any ciphertext

Also known asGHSA-mwjc-5j4x-r686
Published
Mar 23, 2026
Updated
Aug 12, 2026
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Sep 22, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

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-2026-33512.

EPSS Exploitation Probability

via FIRST.org ↗
0.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs15th percentile — riskier than 15% of all scored CVEsHighest risk

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-2026-33512 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

1 pkg affected
🐘wwbn/avideo

Real-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 API plugin exposes a decryptString action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., view/url2Embed.json.php), so any user can recover protected tokens/metadata. Severity: High.

Details

  • Entry: plugin/API/get.json.php is unauthenticated.
  • Handler: plugin/API/API.php get_api_decryptString() (lines ~5945–5966): 
    $string = decryptString($_REQUEST['string']);
return new ApiObject($string, empty($string));
    No APISecret or user check occurs before decrypting.
  • Public ciphertext source: view/url2Embed.json.php returns playLink/playEmbedLink (encryptString(json_encode(...))) to any caller.

PoC

  1. Obtain ciphertext: 
    GET /view/url2Embed.json.php?url=https://example.com/video.mp4
    Copy playLink.
  2. Decrypt without auth: 
    POST /plugin/API/get.json.php?APIName=decryptString
Content-Type: application/x-www-form-urlencoded

string=<playLink ciphertext>
    Response contains the plaintext JSON (videoLink, title, users_id, etc.).

Impact

  • Any encrypted payload produced by the platform can be decrypted by anyone.
  • Leaks tokens/links intended to be confidential; enables replay and tampering where secrecy was assumed.

Mitigation

  • Require API secret or authenticated/authorized user for decryptString, or remove the endpoint.
  • Prefer one-way signatures (HMAC) instead of exposing generic decryption.
  • Rotate encryption keys/salts after patch to invalidate exposed ciphertexts.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistwwbn/avideoall versionsNo fix

Detection & mitigation playbook

Open-source dependency

  1. Detect

    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.

  2. Remediation status

    No patched version of wwbn/avideo has shipped for CVE-2026-33512 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. 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.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-33512 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2026-33512. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary The API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Severity: High. ### Details - Entry: `plugin/API/get.json.php` is unauthenticated. - Handler: `plugin/API/API.php` `get_api_decryptString()` (lines ~5945–5966): ```php $string = decryptString($_REQUEST['string']); return new ApiObject($string, empty($string)); ``` No APISecret or user check occurs before decrypting. - Public cipher
O3 Security · Impact-Aware SCA

Is CVE-2026-33512 in your dependencies?

O3 Security finds CVE-2026-33512 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

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CVE-2026-33512: wwbn/avideo (High 7.5) | O3 Security