CVE-2026-13042

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-16. a secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: None knownExposed: 0

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

The RPB Chessboard plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 8.1.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress's save-time kses sanitization does not mitigate this issue because the crafted payload uses only kses-allowed tags and attributes (such as an <a> element with title and href), and the dangerous attribute-breaking HTML is synthesized entirely at render time by the plugin's own comment_text filter.

CVSS v3
7.2
EG Score
7.2(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity72% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 18, 2026

References (8)

Vendor Advisories for CVE-2026-13042(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 19× in last 7d / 106× 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 146 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-13042?
CVE-2026-13042 is a high vulnerability published on July 16, 2026. The RPB Chessboard plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 8.1.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in…
When was CVE-2026-13042 disclosed?
CVE-2026-13042 was first published in the National Vulnerability Database on July 16, 2026, with the most recent update on July 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13042 actively exploited?
CVE-2026-13042 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 64.4% of all scored CVEs.
What is the CVSS score of CVE-2026-13042?
CVE-2026-13042 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-13042?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13042, 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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