CVE-2026-16765 Online Classroom vulnerability
A vulnerability was determined in CodeAstro Online Classroom 1.0. Affected by this issue is some unknown functionality of the file /OnlineClassroom/loginlinkadmin.php. Executing a manipulation of the argument aid can lead to sql injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.
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CodeAstro Online Classroom should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- 1.0
Fixed versions
- Apply the latest vendor-supported patched version.
How to fix it
CVE-2026-16765 affects Online Classroom and involves SQL injection. Successful exploitation may let an attacker read or change database data through the affected request path. Treat this as a high-priority fix, especially when the affected component or endpoint is reachable by untrusted users. No confirmed fixed version is recorded for CVE-2026-16765; follow the linked vendor advisory, apply its mitigation, and update Online Classroom as soon as a supported patched release is available.
- Inventory every deployment, device, package, plugin, container, build, and environment that uses Online Classroom.
- Compare the installed version with the recorded affected range: 1.0.
- No confirmed fixed version is recorded for CVE-2026-16765; follow the linked vendor advisory, apply its mitigation, and update Online Classroom as soon as a supported patched release is available.
- Until patched, reduce public exposure, disable the affected workflow where practical, and allow access only from trusted users and systems.
- Review configuration, roles, tokens, network paths, and exposed endpoints connected to Online Classroom; remove access that is not required.
- Review web, database, WAF, and application logs for unusual query errors, delays, data access, or requests to the affected parameter.
- If exploitation is suspected, isolate affected assets, preserve evidence, rotate exposed credentials or keys, restore trusted data, and rebuild compromised systems before returning them to service.
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Verify the fix
- Confirm every affected asset now runs the fixed vendor-supported release or has the documented mitigation for CVE-2026-16765 in place.
- Use a safe regression test to confirm the affected SQL injection path no longer produces the vulnerable behavior.
- Confirm temporary access controls, endpoint restrictions, network blocks, and least-privilege settings remain effective after the update.
- Review post-remediation logs and rerun Fixnx plus the relevant package, dependency, firmware, browser, or product-specific security check.
- Document affected assets, versions, changes, validation evidence, reviewed logs, and any credential rotation, cleanup, or replacement completed.
Related categories
Related security risks
More published guidance from the same primary category.
Trusted references
FAQ
What is affected by CVE-2026-16765?
CodeAstro Online Classroom versions listed as affected should be reviewed: 1.0.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.