CVE-2026-11900

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-07-03. A secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.3Exploit: None knownExposed services: Not assessed

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

The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 2.8.16 via the 'data' attribute of the [adinserter] shortcode. This is due to the replace_ai_tags() function processing a {reusable-block-N} tag pattern that calls get_post_field('post_content', N) without verifying the requesting user's capability with current_user_can('read_post'), without restricting the post type to 'wp_block', and without checking the post status. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the full content of arbitrary posts including Private, Draft, Pending, Trashed, and password-protected posts owned by other users, by placing the shortcode in a post they own and previewing it.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100

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 (value × EchelonGraph’s weight)
Severity43% × 45%
The EG Score, 4.3 of 10.
Exploitation0% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 3, 2026

Last Modified

July 7, 2026

References (10)

Vendor Advisories for CVE-2026-11900(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 / 29× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 178 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 78 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 18:25 UTCEG score recompute
  2. 2026-10-11 14:58 UTCEG score recompute
  3. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  4. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  5. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  6. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  7. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  8. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  9. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  12. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  13. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  14. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  15. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  16. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  17. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-09-23 06:35 UTCEG score recompute
  19. 2026-09-23 06:35 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  20. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-09-18 06:12 UTCEG score recompute
  22. 2026-09-18 06:12 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  23. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  24. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  25. 2026-09-13 12:45 UTCEG score recompute
Show 75 more
  1. 2026-09-13 12:45 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  2. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  3. 2026-09-12 14:05 UTCEG score recompute
  4. 2026-09-12 14:05 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  5. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  6. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  7. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  9. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-09-05 23:48 UTCEG score recompute
  12. 2026-09-05 23:48 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  13. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  14. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  16. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  17. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  18. 2026-08-30 11:19 UTCEG score recompute
  19. 2026-08-30 11:19 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  20. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  21. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  22. 2026-08-28 02:45 UTCEG score recompute
  23. 2026-08-28 02:45 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  24. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  25. 2026-08-27 03:13 UTCEG score recompute
  26. 2026-08-27 03:13 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  27. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  28. 2026-08-24 20:54 UTCEG score recompute
  29. 2026-08-24 20:54 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  30. 2026-08-23 21:56 UTCEG score recompute
  31. 2026-08-23 21:56 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  32. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  33. 2026-08-22 23:27 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  34. 2026-08-22 00:54 UTCEG score recompute
  35. 2026-08-22 00:54 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  36. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  37. 2026-08-21 02:25 UTCEG score recompute
  38. 2026-08-21 02:25 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  39. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  40. 2026-08-20 03:56 UTCEG score recompute
  41. 2026-08-20 03:56 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  42. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  43. 2026-08-19 03:55 UTCEG score recompute
  44. 2026-08-19 03:55 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  45. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  46. 2026-08-18 04:27 UTCEG score recompute
  47. 2026-08-18 04:27 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  48. 2026-08-17 04:54 UTCEG score recompute
  49. 2026-08-17 04:54 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  50. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  51. 2026-08-16 06:24 UTCEG score recompute
  52. 2026-08-16 06:24 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  53. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  54. 2026-08-15 07:55 UTCEG score recompute
  55. 2026-08-15 07:55 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  56. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  57. 2026-08-14 08:39 UTCEG score recompute
  58. 2026-08-14 08:39 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  59. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  60. 2026-08-13 10:10 UTCEG score recompute
  61. 2026-08-13 10:10 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  62. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  63. 2026-08-12 11:41 UTCEG score recompute
  64. 2026-08-12 11:41 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  65. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  66. 2026-08-11 13:11 UTCEG score recompute
  67. 2026-08-11 13:11 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  68. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  69. 2026-08-10 14:42 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  70. 2026-08-09 16:13 UTCEG score recompute
  71. 2026-08-09 16:13 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  72. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  73. 2026-08-08 17:44 UTCEG score recompute
  74. 2026-08-08 17:44 UTCGHSA enrichmentGHSA-ppgc-36hr-q23g · GitHub CVSS 4.3
  75. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 18th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11900?
CVE-2026-11900 is a medium-severity vulnerability; its CVE record was published on July 3, 2026. The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 2.8.16 via the 'data' attribute of the [adinserter] shortcode. This is due to the replaceaitags() function processing a {reusable-block-N} tag pattern…
When was the CVE record for CVE-2026-11900 published?
The CVE record for CVE-2026-11900 was published on July 3, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 7, 2026; the record at its source may have been updated since.
Is CVE-2026-11900 actively exploited?
CVE-2026-11900 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-11900?
CVE-2026-11900 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-11900?
No fix for CVE-2026-11900 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-11900 are linked in the Vendor Advisories panel on this page.

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