CVE-2026-30562

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-30. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

A Reflected Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Sales and Inventory System 1.0. The vulnerability is located in the add_stock.php file via the "msg" parameter. The application fails to sanitize the input, allowing remote attackers to inject arbitrary web script or HTML via a crafted URL.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

March 30, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Web-Security-PoCs/Inventory-System/XSS-AddStock-msg.md at main · meifukun/Web-Security-PoCs · GitHub

https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-AddStock-msg.md

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-30562?
CVE-2026-30562 is a critical vulnerability published on March 30, 2026. A Reflected Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Sales and Inventory System 1.0. The vulnerability is located in the add_stock.php file via the "msg" parameter. The application fails to sanitize the input, allowing remote attackers to inject arbitrary web script or HTML…
When was CVE-2026-30562 disclosed?
CVE-2026-30562 was first published in the National Vulnerability Database on March 30, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-30562 actively exploited?
CVE-2026-30562 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 75.1% of all scored CVEs.
What is the CVSS score of CVE-2026-30562?
CVE-2026-30562 has a CVSS v3.1 base score of 9.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-30562?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-30562, 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.

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