CVE-2026-42756

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-27. NVD baseline CVSS 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0

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

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Ludwig You QuickWebP – Compress / Optimize Images & Convert WebP | SEO Friendly quickwebp allows Path Traversal.This issue affects QuickWebP – Compress / Optimize Images & Convert WebP | SEO Friendly: from n/a through <= 3.2.7.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity99% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

May 27, 2026

Last Modified

May 27, 2026

Advisory Details (1)

Auto-updated Sep 13, 2026
No patch confirmed yet.
generic

Arbitrary File Deletion in WordPress QuickWebP &#8211; Compress / Optimize Images &amp; Convert WebP | SEO Friendly Plugin - Patchstack

https://patchstack.com/database/Wordpress/Plugin/quickwebp/vulnerability/wordpress-quickwebp-compress-optimize-images-convert-webp-seo-friendly-plugin-3-2-7-arbitrary-file-deletion-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-42756(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 8× in last 7d / 40× 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 345 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-42756?
CVE-2026-42756 is a critical vulnerability published on May 27, 2026. Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Ludwig You QuickWebP &#8211; Compress / Optimize Images &amp; Convert WebP | SEO Friendly quickwebp allows Path Traversal.This issue affects QuickWebP &#8211; Compress / Optimize Images &amp; Convert…
When was CVE-2026-42756 disclosed?
CVE-2026-42756 was first published in the National Vulnerability Database on May 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42756 actively exploited?
CVE-2026-42756 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 73.3% of all scored CVEs.
What is the CVSS score of CVE-2026-42756?
CVE-2026-42756 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-42756?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42756, 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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