CVE-2026-15559

MEDIUMPre-NVD 6.36.3—
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
Trending — 3 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
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/3
generic

CodeAstro - Home For All Free Source Codes

https://codeastro.com/

Vendor 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 13× in last 7d / 24× 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.

  1. 2026-07-27 15:25 UTCEG score recompute
  2. 2026-07-27 15:25 UTCGHSA enrichment
  3. 2026-07-27 14:13 UTCEPSS rescore
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-26 11:53 UTCEG score recompute
  7. 2026-07-26 11:53 UTCGHSA enrichment
  8. 2026-07-25 14:17 UTCEPSS rescore
  9. 2026-07-24 14:17 UTCEPSS rescore
  10. 2026-07-23 14:18 UTCEPSS rescore
  11. 2026-07-23 03:05 UTCEG score recompute
  12. 2026-07-22 14:08 UTCEPSS rescore
  13. 2026-07-21 15:24 UTCEPSS rescore
  14. 2026-07-20 17:08 UTCEPSS rescore
  15. 2026-07-19 14:30 UTCEPSS rescore
  16. 2026-07-18 10:04 UTCEPSS rescore
  17. 2026-07-16 19:44 UTCGHSA enrichment
  18. 2026-07-15 17:27 UTCGHSA enrichment
  19. 2026-07-15 16:57 UTCEPSS rescore
  20. 2026-07-15 02:00 UTCEPSS rescore
  21. 2026-07-14 15:10 UTCGHSA enrichment
  22. 2026-07-13 14:08 UTCNVD updateCVSS v4 → 2.1
  23. 2026-07-13 12:53 UTCEG score recompute
  24. 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 0% probability of exploitation in the next 30 days, which ranks it in the top 89.9% of all scored CVEs.
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

Explore →

Is Your Infrastructure Affected by CVE-2026-15559?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs