CVE-2026-15539

MEDIUMPre-NVD 4.74.7—
EchelonGraph scoreHIGH confidence

Score 4.7 from GitHub Security Advisory (severity: LOW) published 2026-07-13. a secondary CVSS source baseline 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.7Exploit: Elevated riskExposed: 0

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

A security vulnerability has been detected in SourceCodester Online Book Store System 1.0. Impacted is an unknown function of the file /admin/index.php?page=books of the component Book Image Upload Feature. Such manipulation leads to unrestricted upload. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

CVSS v3
4.7
EG Score
4.7(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity47% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

July 13, 2026

Last Modified

July 13, 2026

Advisory Details (1)

Auto-updated Jul 13, 2026
No patch confirmed yet.
generic

Free Source Code Projects and Tutorials - sourcecodester.com

https://www.sourcecodester.com/

Vendor Advisories for CVE-2026-15539(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 15× in last 7d / 32× 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. 2026-07-28 17:11 UTCEG score recompute
  2. 2026-07-28 17:11 UTCGHSA enrichment
  3. 2026-07-28 15:36 UTCEPSS rescore
  4. 2026-07-27 15:27 UTCEG score recompute
  5. 2026-07-27 15:27 UTCGHSA enrichment
  6. 2026-07-27 14:13 UTCEPSS rescore
  7. 2026-07-26 14:54 UTCEPSS rescore
  8. 2026-07-26 14:54 UTCEPSS rescore
  9. 2026-07-26 11:58 UTCEG score recompute
  10. 2026-07-26 11:58 UTCGHSA enrichment
  11. 2026-07-25 14:17 UTCEPSS rescore
  12. 2026-07-24 14:17 UTCEPSS rescore
  13. 2026-07-23 14:18 UTCEPSS rescore
  14. 2026-07-23 03:05 UTCEG score recompute
  15. 2026-07-22 14:08 UTCEPSS rescore
  16. 2026-07-21 15:24 UTCEPSS rescore
  17. 2026-07-20 17:08 UTCEPSS rescore
  18. 2026-07-19 14:30 UTCEPSS rescore
  19. 2026-07-19 02:28 UTCEPSS rescore
  20. 2026-07-18 10:04 UTCEPSS rescore
  21. 2026-07-16 17:02 UTCEPSS rescore
  22. 2026-07-16 11:10 UTCGHSA enrichment
  23. 2026-07-15 16:57 UTCEPSS rescore
  24. 2026-07-15 09:39 UTCGHSA enrichment
  25. 2026-07-15 02:00 UTCEPSS rescore
Show 7 more
  1. 2026-07-14 08:06 UTCGHSA enrichment
  2. 2026-07-13 22:30 UTCEPSS rescore
  3. 2026-07-13 16:24 UTCNVD updateCVSS v4 → 2
  4. 2026-07-13 15:32 UTCMITRE cvelistV5CVSS v4 → 5.1
  5. 2026-07-13 08:08 UTCNVD updateCVSS v4 → 2
  6. 2026-07-13 06:34 UTCEG score recompute
  7. 2026-07-13 06:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15539?
CVE-2026-15539 is a medium vulnerability published on July 13, 2026. A security vulnerability has been detected in SourceCodester Online Book Store System 1.0. Impacted is an unknown function of the file /admin/index.php?page=books of the component Book Image Upload Feature. Such manipulation leads to unrestricted upload. The attack may be performed from remote. The…
When was CVE-2026-15539 disclosed?
CVE-2026-15539 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-2026-15539 actively exploited?
CVE-2026-15539 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 86.4% of all scored CVEs.
What is the CVSS score of CVE-2026-15539?
CVE-2026-15539 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2026-15539?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15539, 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

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