CVE-2018-25331

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-05-17. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

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

Zenar Content Management System contains a cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating form parameters in POST requests. Attackers can inject script tags through the current_page parameter sent to the ajax.php endpoint, which reflects unsanitized user input in the response HTML to execute arbitrary JavaScript in victim browsers.

CVSS v3
6.1
EG Score
6.1(medium)
EPSS
11.9%
KEV
Not listed

Published

May 17, 2026

Last Modified

May 24, 2026

Advisory Details (4)

Auto-updated May 17, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Zenario: open source CMS for websites, databases and extranets

https://zenar.io/
generic

Zenar Content Management System Cross-Site Scripting via ajax.php | Advisories | VulnCheck

https://www.vulncheck.com/advisories/zenar-content-management-system-cross-site-scripting-via-ajax-php
generic🟡 PoC Available

Zenar Content Management System - Cross-Site Scripting - PHP webapps Exploit

https://www.exploit-db.com/exploits/44664
generic

Zenario demo site home page

http://demo.zenar.io

Vendor Advisories for CVE-2018-25331(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 10× in last 7d / 62× 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 168 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-25331?
CVE-2018-25331 is a medium vulnerability published on May 17, 2026. Zenar Content Management System contains a cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating form parameters in POST requests. Attackers can inject script tags through the current_page parameter sent to the ajax.php endpoint, which…
When was CVE-2018-25331 disclosed?
CVE-2018-25331 was first published in the National Vulnerability Database on May 17, 2026, with the most recent update on May 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-25331 actively exploited?
CVE-2018-25331 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-25331?
CVE-2018-25331 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2018-25331?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-25331, 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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