CVE-2026-14827

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

Score 6.8 from GitHub Security Advisory published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.8Exploit: Elevated riskExposed: 0

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

The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.

CVSS v3
6.8
EG Score
6.8(medium)
EG Risk
47(Track*)
EG Risk 47/100SSVC: 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
Severity68% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 27, 2026

Advisory Details (1)

Auto-updated Jul 27, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Calendar < 1.3.18 – Contributor+ Stored XSS via event_link Parameter | CVE 2026-14827 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/b2981b41-b712-43d9-a327-3a376346cec5/

Vendor Advisories for CVE-2026-14827(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 18× in last 7d / 71× 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 135 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-14827?
CVE-2026-14827 is a medium vulnerability published on July 27, 2026. The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.
When was CVE-2026-14827 disclosed?
CVE-2026-14827 was first published in the National Vulnerability Database on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14827 actively exploited?
CVE-2026-14827 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 86.3% of all scored CVEs.
What is the CVSS score of CVE-2026-14827?
CVE-2026-14827 has a CVSS v3.1 base score of 6.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-14827?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-14827, 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

Explore the affected products and dependency analysis for CVE-2026-14827

Explore →

Is Your Infrastructure Affected by CVE-2026-14827?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs