CVE-2018-25353

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

Redaxo CMS Mediapool Addon 5.5.1 and older contains an arbitrary file upload vulnerability that allows authenticated users to bypass file extension blacklist restrictions. Attackers with editor accounts can upload executable files by using obfuscated extensions like php71 or php53 to evade the blacklist filter and execute arbitrary code.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

May 26, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jun 2, 2026
No patch confirmed yet.
generic

Redaxo CMS Mediapool Addon 5.5.1 Arbitrary File Upload | Advisories | VulnCheck

https://www.vulncheck.com/advisories/redaxo-cms-mediapool-addon-arbitrary-file-upload
generic

REDAXO - Content Management System [CMS] - Kostenlos - Frei - PHP - MySQL - Open-Source | Simple To Use | home

https://redaxo.org

Vendor Advisories for CVE-2018-25353(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 30× 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 235 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2018-25353?
CVE-2018-25353 is a high vulnerability published on May 26, 2026. Redaxo CMS Mediapool Addon 5.5.1 and older contains an arbitrary file upload vulnerability that allows authenticated users to bypass file extension blacklist restrictions. Attackers with editor accounts can upload executable files by using obfuscated extensions like php71 or php53 to evade the…
When was CVE-2018-25353 disclosed?
CVE-2018-25353 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-25353 actively exploited?
CVE-2018-25353 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 61.8% of all scored CVEs.
What is the CVSS score of CVE-2018-25353?
CVE-2018-25353 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2018-25353?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-25353, 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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