CVE-2026-16953

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory published 2026-08-08. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.8Exploit: None knownExposed: 0

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

The AI Engine WordPress plugin before 3.6.4 does not verify ownership of a guest's uploaded chatbot files before deletion, authorising the action solely by a client-supplied session cookie value, so an unauthenticated attacker who obtains a victim's session identifier and file reference can delete that victim's uploaded files.

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: 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
Severity48% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

August 8, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Aug 11, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

AI Engine < 3.6.4 – Unauthenticated Cross-Session Chatbot File Deletion via Forgeable Session Cookie | CVE 2026-16953 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/8f5460a7-9764-4ce1-9cb4-8202b192765d/

Vendor Advisories for CVE-2026-16953(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 15× in last 7d / 74× 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 112 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16953?
CVE-2026-16953 is a medium vulnerability published on August 8, 2026. The AI Engine WordPress plugin before 3.6.4 does not verify ownership of a guest's uploaded chatbot files before deletion, authorising the action solely by a client-supplied session cookie value, so an unauthenticated attacker who obtains a victim's session identifier and file reference can delete…
When was CVE-2026-16953 disclosed?
CVE-2026-16953 was first published in the National Vulnerability Database on August 8, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16953 actively exploited?
CVE-2026-16953 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 91.5% of all scored CVEs.
What is the CVSS score of CVE-2026-16953?
CVE-2026-16953 has a CVSS v3.1 base score of 4.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16953?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16953, 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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