A vulnerability was detected in CodeAstro Simple Online Leave Management System 1.0. This affects an unknown part of the file /SimpleOnlineLeave/admin/accept.php of the component POST Handler. Performing a manipulation of the argument appid results in sql injection. The attack is possible to be carried out remotely. The exploit is now public and may be used.
CVE-2026-15559
MEDIUMPre-NVD 6.36.3—Trending — 5 sources updated this weekElevated
EchelonGraph scoreHIGH confidence
Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-07-13. a secondary CVSS source baseline 6.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.3
- EG Score
- 6.3(high)
- EPSS
- 10.0%
- KEV
- Not listed
Published
July 13, 2026
Last Modified
July 13, 2026
Advisory Details (2)
Auto-updated Jul 13, 2026🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available
codeastro Simple Online Leave Management System V1.0 /SimpleOnlineLeave/admin/accept.php?id=9 SQL injection · Issue #3 · sl1der-fr0g/Findings · GitHub
https://github.com/sl1der-fr0g/Findings/issues/3Vendor Advisories for CVE-2026-15559(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 9× in last 7d / 9× 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.
- 2026-07-15 17:27 UTCEG score recompute
- 2026-07-15 17:27 UTCGHSA enrichment
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 02:00 UTCEPSS rescore
- 2026-07-14 15:10 UTCEG score recompute
- 2026-07-14 15:10 UTCGHSA enrichment
- 2026-07-13 14:08 UTCNVD updateCVSS v4 → 2.1
- 2026-07-13 12:53 UTCEG score recompute
- 2026-07-13 12:52 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-15559?
CVE-2026-15559 is a medium vulnerability published on July 13, 2026. A vulnerability was detected in CodeAstro Simple Online Leave Management System 1.0. This affects an unknown part of the file /SimpleOnlineLeave/admin/accept.php of the component POST Handler. Performing a manipulation of the argument appid results in sql injection. The attack is possible to be…
When was CVE-2026-15559 disclosed?
CVE-2026-15559 was first published in the National Vulnerability Database on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15559 actively exploited?
CVE-2026-15559 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15559?
CVE-2026-15559 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-15559?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15559, 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-2026-15559
Is Your Infrastructure Affected by CVE-2026-15559?
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