A vulnerability was found in SourceCodester Class and Exam Timetabling System 1.0. This affects an unknown part of the file /BSIS.php. Performing a manipulation of the argument day results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used.
CVE-2026-16486
MEDIUMPre-NVD 4.34.3—Trending — 5 sources updated this weekElevated
EchelonGraph scoreHIGH confidence
Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-07-22. a secondary CVSS source baseline 4.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(high)
- EPSS
- 19.4%
- KEV
- Not listed
Published
July 21, 2026
Last Modified
July 22, 2026
Advisory Details (2)
Auto-updated Jul 22, 2026No patch confirmed yet.
generic
sourcecodester Class and Exam Timetabling System Project V1.0 /BSIS.php cross site scripting · Issue #1 · kurshidheba852-hub/My-cve-repository · GitHub
https://github.com/kurshidheba852-hub/My-cve-repository/issues/1Vendor Advisories for CVE-2026-16486(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 8× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 20:53 UTCNVD updateCVSS v4 → 2.1
- 2026-07-22 19:00 UTCMITRE cvelistV5CVSS v4 → 5.3
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-22 01:44 UTCEG score recompute
- 2026-07-22 01:44 UTCGHSA enrichment
- 2026-07-21 23:20 UTCNVD updateCVSS v4 → 2.1
- 2026-07-21 23:10 UTCEG score recompute
- 2026-07-21 23:09 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-16486?
CVE-2026-16486 is a medium vulnerability published on July 21, 2026. A vulnerability was found in SourceCodester Class and Exam Timetabling System 1.0. This affects an unknown part of the file /BSIS.php. Performing a manipulation of the argument day results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be…
When was CVE-2026-16486 disclosed?
CVE-2026-16486 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16486 actively exploited?
CVE-2026-16486 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-16486?
CVE-2026-16486 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-16486?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16486, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-16486
Is Your Infrastructure Affected by CVE-2026-16486?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.