CVE-2026-45233

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.1Exploit: NoneExposed: 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(high)
EPSS
42.9%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 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 36× in last 7d / 62× 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.

  1. 2026-07-07 06:08 UTCEG score recompute
  2. 2026-07-07 06:08 UTCGHSA enrichment
  3. 2026-07-06 18:37 UTCEG score recompute
  4. 2026-07-06 18:37 UTCGHSA enrichment
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 07:05 UTCEG score recompute
  7. 2026-07-06 07:05 UTCGHSA enrichment
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 19:34 UTCEG score recompute
  10. 2026-07-05 19:34 UTCGHSA enrichment
  11. 2026-07-05 08:05 UTCEG score recompute
  12. 2026-07-05 08:05 UTCGHSA enrichment
  13. 2026-07-05 02:30 UTCEPSS rescore
  14. 2026-07-04 20:27 UTCEG score recompute
  15. 2026-07-04 20:27 UTCGHSA enrichment
  16. 2026-07-04 08:58 UTCEG score recompute
  17. 2026-07-04 08:58 UTCGHSA enrichment
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-03 21:28 UTCEG score recompute
  20. 2026-07-03 21:28 UTCGHSA enrichment
  21. 2026-07-03 09:59 UTCEG score recompute
  22. 2026-07-03 09:59 UTCGHSA enrichment
  23. 2026-07-02 22:27 UTCEG score recompute
  24. 2026-07-02 22:27 UTCGHSA enrichment
  25. 2026-07-02 10:59 UTCEG score recompute
Show 37 more
  1. 2026-07-02 10:59 UTCGHSA enrichment
  2. 2026-07-01 23:08 UTCEG score recompute
  3. 2026-07-01 23:08 UTCGHSA enrichment
  4. 2026-07-01 15:07 UTCEPSS rescore
  5. 2026-07-01 11:39 UTCEG score recompute
  6. 2026-07-01 11:39 UTCGHSA enrichment
  7. 2026-07-01 00:11 UTCEG score recompute
  8. 2026-07-01 00:11 UTCGHSA enrichment
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 12:43 UTCEG score recompute
  11. 2026-06-30 12:43 UTCGHSA enrichment
  12. 2026-06-30 01:07 UTCEG score recompute
  13. 2026-06-30 01:07 UTCGHSA enrichment
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-29 13:39 UTCEG score recompute
  17. 2026-06-29 13:38 UTCGHSA enrichment
  18. 2026-06-29 02:10 UTCEG score recompute
  19. 2026-06-29 02:10 UTCGHSA enrichment
  20. 2026-06-28 14:41 UTCEG score recompute
  21. 2026-06-28 14:41 UTCGHSA enrichment
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-28 04:56 UTCEPSS rescore
  25. 2026-06-28 03:13 UTCEG score recompute
  26. 2026-06-28 03:13 UTCGHSA enrichment
  27. 2026-06-27 15:44 UTCEG score recompute
  28. 2026-06-27 15:44 UTCGHSA enrichment
  29. 2026-06-27 04:15 UTCEG score recompute
  30. 2026-06-27 04:15 UTCGHSA enrichment
  31. 2026-06-27 03:08 UTCEPSS rescore
  32. 2026-06-26 16:46 UTCEG score recompute
  33. 2026-06-26 16:46 UTCGHSA enrichment
  34. 2026-06-26 05:18 UTCEG score recompute
  35. 2026-06-26 05:18 UTCGHSA enrichment
  36. 2026-06-25 17:49 UTCEG score recompute
  37. 2026-06-25 17:48 UTCNVD updatefirst tracked

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. 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 42.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45233?
CVE-2026-45233 has a CVSS v3 base score of 8.1 (NVD).
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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