Security readout for executives and security teams
Plain-English summary
AVideo before 26.0 has a server-side request forgery issue in the Scheduler plugin. A user with admin privileges can configure a callback URL that makes the server contact internal systems or cloud metadata services. This mainly threatens sensitive internal data exposure, not broad unauthenticated compromise.
Executive priority
Treat as a timely maintenance and exposure-reduction item, especially for cloud-hosted AVideo. Prioritize upgrade if administrators are numerous, third-party managed, or if the server can reach sensitive internal APIs.
Technical view
The Scheduler plugin run() path in plugin/Scheduler/Scheduler.php passes admin-configurable callbackURL to url_get_contents() after only isValidURL() format validation. It does not apply isSSRFSafeURL(), which is intended to block private, loopback, and cloud metadata targets. Fixed in AVideo 26.0.
Likely exposure
Exposure is limited to WWBN AVideo installations below 26.0 using the Scheduler plugin. Exploitation requires administrator privileges in AVideo, but impact can extend to internal services reachable from the AVideo server.
Exploitation context
The source bundle does not indicate active exploitation, and CISA KEV status is false. The issue is lower likelihood because it requires admin access, but it can become significant in cloud or segmented environments where the AVideo server can reach sensitive internal endpoints.
Researcher notes
This is CWE-918 SSRF with high privileges required. The key code distinction is format validation through isValidURL() without SSRF safety validation via isSSRFSafeURL(). Sources name 26.0 as patched; no separate workaround is provided.
Mitigation direction
- Upgrade WWBN AVideo to version 26.0 or later.
- Review vendor advisory and commit for exact remediation details.
- Audit Scheduler plugin tasks for unexpected or internal callback URLs.
- Restrict AVideo server egress to only required destinations where feasible.
- Limit and monitor AVideo administrator accounts.
Validation and detection
- Inventory AVideo deployments and identify versions below 26.0.
- Confirm whether the Scheduler plugin is enabled or used.
- Review scheduled task callbackURL values for internal, loopback, or metadata destinations.
- Verify the patched validation is present after upgrade.
- Check logs for unusual Scheduler outbound requests.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-918: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-33237 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N1.24.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/WWBN/AVideo/security/advisories/GHSA-v467-g7g7-hhfhCVE reference · x_refsource_CONFIRM
- https://github.com/WWBN/AVideo/issues/10403CVE reference · x_refsource_MISC
- https://github.com/WWBN/AVideo/commit/df926e500580c2a1e3c70351f0c30f4e15c0fd83CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Server-Side Request Forgery (SSRF)
Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.