CVE-2026-15539

MEDIUMPre-NVD 4.74.7—
EchelonGraph scoreMEDIUM 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(medium)
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
34%
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 5× in last 7d / 44× 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.

Showing the most recent 100 of 140 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-18 05:08 UTCEG score recompute
  3. 2026-09-18 05:08 UTCGHSA enrichment
  4. 2026-09-16 14:07 UTCEPSS rescore
  5. 2026-09-16 05:14 UTCEPSS rescore
  6. 2026-09-14 09:35 UTCEG score recompute
  7. 2026-09-14 09:35 UTCGHSA enrichment
  8. 2026-09-13 16:46 UTCEPSS rescore
  9. 2026-09-13 08:04 UTCEG score recompute
  10. 2026-09-13 08:04 UTCGHSA enrichment
  11. 2026-09-12 15:00 UTCEPSS rescore
  12. 2026-09-12 01:58 UTCEG score recompute
  13. 2026-09-12 01:58 UTCGHSA enrichment
  14. 2026-09-11 14:52 UTCEPSS rescore
  15. 2026-09-11 09:36 UTCEPSS rescore
  16. 2026-09-10 09:34 UTCEPSS rescore
  17. 2026-09-08 22:00 UTCEPSS rescore
  18. 2026-09-08 02:13 UTCEG score recompute
  19. 2026-09-08 02:13 UTCGHSA enrichment
  20. 2026-09-07 16:01 UTCEPSS rescore
  21. 2026-09-06 13:47 UTCEPSS rescore
  22. 2026-09-05 21:30 UTCEG score recompute
  23. 2026-09-05 21:29 UTCGHSA enrichment
  24. 2026-09-04 05:06 UTCEPSS rescore
  25. 2026-09-02 14:11 UTCEPSS rescore
Show 75 more
  1. 2026-09-01 13:53 UTCEPSS rescore
  2. 2026-09-01 04:39 UTCEPSS rescore
  3. 2026-08-30 19:17 UTCEPSS rescore
  4. 2026-08-30 05:41 UTCEG score recompute
  5. 2026-08-30 05:41 UTCGHSA enrichment
  6. 2026-08-30 01:22 UTCEPSS rescore
  7. 2026-08-28 21:41 UTCEPSS rescore
  8. 2026-08-28 02:36 UTCEG score recompute
  9. 2026-08-28 02:36 UTCGHSA enrichment
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-27 00:19 UTCEG score recompute
  12. 2026-08-27 00:19 UTCGHSA enrichment
  13. 2026-08-26 14:46 UTCEPSS rescore
  14. 2026-08-25 14:43 UTCEG score recompute
  15. 2026-08-25 14:43 UTCGHSA enrichment
  16. 2026-08-25 13:48 UTCEPSS rescore
  17. 2026-08-24 12:36 UTCEG score recompute
  18. 2026-08-24 12:36 UTCGHSA enrichment
  19. 2026-08-23 10:25 UTCGHSA enrichment
  20. 2026-08-22 08:51 UTCEG score recompute
  21. 2026-08-22 08:51 UTCGHSA enrichment
  22. 2026-08-21 23:49 UTCEPSS rescore
  23. 2026-08-21 07:20 UTCEG score recompute
  24. 2026-08-21 07:20 UTCGHSA enrichment
  25. 2026-08-20 22:55 UTCEPSS rescore
  26. 2026-08-20 05:49 UTCEG score recompute
  27. 2026-08-20 05:49 UTCGHSA enrichment
  28. 2026-08-19 17:03 UTCEPSS rescore
  29. 2026-08-19 04:18 UTCGHSA enrichment
  30. 2026-08-18 02:46 UTCEG score recompute
  31. 2026-08-18 02:46 UTCGHSA enrichment
  32. 2026-08-17 13:47 UTCEPSS rescore
  33. 2026-08-16 23:09 UTCEG score recompute
  34. 2026-08-16 23:09 UTCGHSA enrichment
  35. 2026-08-16 14:56 UTCEPSS rescore
  36. 2026-08-16 02:14 UTCEPSS rescore
  37. 2026-08-15 21:38 UTCEG score recompute
  38. 2026-08-15 21:38 UTCGHSA enrichment
  39. 2026-08-15 01:30 UTCEPSS rescore
  40. 2026-08-14 20:06 UTCEG score recompute
  41. 2026-08-14 20:06 UTCGHSA enrichment
  42. 2026-08-13 22:00 UTCEPSS rescore
  43. 2026-08-13 18:35 UTCGHSA enrichment
  44. 2026-08-12 17:04 UTCEG score recompute
  45. 2026-08-12 17:04 UTCGHSA enrichment
  46. 2026-08-12 13:50 UTCEPSS rescore
  47. 2026-08-11 15:33 UTCEG score recompute
  48. 2026-08-11 15:33 UTCGHSA enrichment
  49. 2026-08-11 13:42 UTCEPSS rescore
  50. 2026-08-11 00:00 UTCEPSS rescore
  51. 2026-08-10 14:01 UTCEG score recompute
  52. 2026-08-10 14:01 UTCGHSA enrichment
  53. 2026-08-09 13:46 UTCEPSS rescore
  54. 2026-08-09 12:30 UTCEG score recompute
  55. 2026-08-09 12:30 UTCGHSA enrichment
  56. 2026-08-08 16:37 UTCEPSS rescore
  57. 2026-08-08 10:59 UTCEG score recompute
  58. 2026-08-08 10:59 UTCGHSA enrichment
  59. 2026-08-07 09:27 UTCEG score recompute
  60. 2026-08-07 09:27 UTCGHSA enrichment
  61. 2026-08-06 13:46 UTCEPSS rescore
  62. 2026-08-06 07:56 UTCEG score recompute
  63. 2026-08-06 07:56 UTCGHSA enrichment
  64. 2026-08-05 19:17 UTCEPSS rescore
  65. 2026-08-05 06:25 UTCEG score recompute
  66. 2026-08-05 06:25 UTCGHSA enrichment
  67. 2026-08-04 15:10 UTCEPSS rescore
  68. 2026-08-04 10:38 UTCEPSS rescore
  69. 2026-08-04 03:52 UTCEG score recompute
  70. 2026-08-04 03:52 UTCGHSA enrichment
  71. 2026-08-03 10:35 UTCEPSS rescore
  72. 2026-08-03 02:21 UTCEG score recompute
  73. 2026-08-03 02:21 UTCGHSA enrichment
  74. 2026-08-02 02:26 UTCEPSS rescore
  75. 2026-08-02 00:50 UTCEG score recompute

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 66.4% 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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