CVE-2026-45233

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

HTMLy CMS through 3.1.1 contains a path traversal vulnerability that allows low-privileged authenticated attackers to relocate arbitrary files by supplying directory traversal sequences in the oldfile parameter at the admin autosave endpoint. Attackers can pass unsanitized traversal sequences directly to file_exists() and rename() functions in admin.php without canonicalization or directory boundary enforcement to cause unintended relocation of any file writable by the web server process to an attacker-specified draft location.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

HTMLy CMS 3.1.1 Path Traversal via oldfile Parameter in Autosave | Advisories | VulnCheck

https://www.vulncheck.com/advisories/htmly-cms-path-traversal-via-oldfile-parameter-in-autosave
generic

HTMLy-v3.1.1-Authenticated-Path-Traversal.md · GitHub

https://gist.github.com/mrgr4yhat/c4df971eafa272ac8c86c15e2829b7fe

Vendor Advisories for CVE-2026-45233(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 6× in last 7d / 63× 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 212 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-45233?
CVE-2026-45233 is a high vulnerability published on June 25, 2026. HTMLy CMS through 3.1.1 contains a path traversal vulnerability that allows low-privileged authenticated attackers to relocate arbitrary files by supplying directory traversal sequences in the oldfile parameter at the admin autosave endpoint. Attackers can pass unsanitized traversal sequences…
When was CVE-2026-45233 disclosed?
CVE-2026-45233 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45233 actively exploited?
CVE-2026-45233 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.4% of all scored CVEs.
What is the CVSS score of CVE-2026-45233?
CVE-2026-45233 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-45233?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45233, 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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