CVE-2026-15446

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-08-19. A secondary CVSS source baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The EWWW Image Optimizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'data-script' Lazy Load Attribute in Post Content in all versions up to, and including, 8.7.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit is achieved by embedding a crafted img element with class='lazyload' and a data-script attribute pointing to an attacker-controlled URL in post content, which the plugin's bundled lazysizes ls.unveilhooks addon then uses to dynamically create and insert a script element into the DOM at page view time.

CVSS v3
6.4
EG Score
6.4MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

August 20, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
Patch available. Sources: github_commit.
github_commit Patch Available

commit 4488aafaee92 (nosilver4u/ewww-image-optimizer)

Patch available: nosilver4u/ewww-image-optimizer v8.7.4 (contains commit 4488aafaee92)

https://github.com/nosilver4u/ewww-image-optimizer/commit/4488aafaee9212db370a5ed2dcb9bad7912b897d

Vendor Advisories for CVE-2026-15446(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 17× in last 7d / 69× 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 122 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15446?
CVE-2026-15446 is a medium vulnerability published on August 19, 2026. The EWWW Image Optimizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'data-script' Lazy Load Attribute in Post Content in all versions up to, and including, 8.7.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated…
When was CVE-2026-15446 disclosed?
CVE-2026-15446 was first published on August 19, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15446 actively exploited?
CVE-2026-15446 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15446?
CVE-2026-15446 has a CVSS base score of 6.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15446?
A fix for CVE-2026-15446 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-15446 are linked in the Vendor Advisories panel on this page.

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