Quick answers
- Is CVE-2026-86278 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-86278 being exploited in the wild.
- How severe is CVE-2026-86278?
- Medium severity, with a CVSS score of 4.3, published 7 September 2026.
- Which products and versions are affected?
- SourceCodester Syllabus-Aligned Learning Management & Examination System 1.0.
- Is there a fix for CVE-2026-86278?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-86278 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-86278?
- Check whether you run SourceCodester Syllabus-Aligned Learning Management & Examination System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a combination of reflected and stored cross-site scripting (XSS) in the manage_subjects.php file and other application pages. The root cause is insufficient input validation and output encoding of user-supplied parameters including msg, title, and content fields. Attack vectors include reflected XSS via GET parameters (msg), stored XSS through announcements and lesson slide content storage, and error-based XSS via SQL error messages. The attack is remotely exploitable and requires no prior authentication. An attacker can execute arbitrary JavaScript in the context of a logged-in user's session, leading to session hijacking, credential theft, and malware distribution. Patches with proper input validation and output encoding are recommended.
Affected products
- SourceCodester Syllabus-Aligned Learning Management & Examination System 1.0
Timeline
- 2026-09-07: disclosed
- other: Exploit made public