CVE-2023-45727

CRITICALNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-12-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 4%CVSS: 7.5Exploit: cisa kev · ssvc activeExposed: 0

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

Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway Edition Ver1.65 and earlier, and Proself Mail Sanitize Edition Ver1.08 and earlier allow a remote unauthenticated attacker to conduct XML External Entity (XXE) attacks. By processing a specially crafted request containing malformed XML data, arbitrary files on the server containing account information may be read by the attacker.

CVSS v3
7.5
EG Score
9.0(high)
EG Risk
96(Attend)
EG Risk 96/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
4%
EPSS %ILE
89%
KEV
⚠ Exploited

Published

October 18, 2023

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Jun 7, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-45727
generic

お知らせ: [至急]Proselfのゼロデイ脆弱性(CVE-2023-45727)による攻撃発生について(更新) / オンラインストレージ構築パッケージ Proself (プロセルフ) / 株式会社ノースグリッド

https://www.proself.jp/information/153/
generic

JVN#95981460: Improper restriction of XML external entity references (XXE) in Proself

https://jvn.jp/en/jp/JVN95981460/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 59× in last 7d / 260× 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 963 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2023-45727?
CVE-2023-45727 is a critical vulnerability published on October 18, 2023. Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway Edition Ver1.65 and earlier, and Proself Mail Sanitize Edition Ver1.08 and earlier allow a remote unauthenticated attacker to conduct XML External Entity (XXE) attacks. By processing a specially crafted request containing…
When was CVE-2023-45727 disclosed?
CVE-2023-45727 was first published in the National Vulnerability Database on October 18, 2023, 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-2023-45727 actively exploited?
Yes. CISA added CVE-2023-45727 to the Known Exploited Vulnerabilities catalog on December 3, 2024, affecting North Grid Proself. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-45727?
CVE-2023-45727 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-45727?
CVE-2023-45727 affects North Grid Proself. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-45727?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-45727, 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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