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
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: Elevated riskExposed: 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)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
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 5× in last 7d / 46× 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 225 total refreshes for this CVE.

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

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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 0% probability of exploitation in the next 30 days, which ranks it in the top 88.2% of all scored CVEs.
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.

Dependency Blast Radius

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