CVE-2026-15446

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreHIGH 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 — 4 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%CVSS: 6.4Exploit: None knownExposed: 0

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

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
6.4(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

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 12× in last 7d / 12× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 16:38 UTCEG score recompute
  3. 2026-08-20 16:38 UTCGHSA enrichment
  4. 2026-08-20 15:46 UTCEG score recompute
  5. 2026-08-20 15:46 UTCGHSA enrichment
  6. 2026-08-20 12:50 UTCGHSA enrichment
  7. 2026-08-20 08:01 UTCEG score recompute
  8. 2026-08-20 08:01 UTCGHSA enrichment
  9. 2026-08-19 17:03 UTCEPSS rescore
  10. 2026-08-19 07:20 UTCEG score recompute
  11. 2026-08-19 06:52 UTCEG score recompute
  12. 2026-08-19 06:52 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 84.5% of all scored CVEs.
What is the CVSS score of CVE-2026-15446?
CVE-2026-15446 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-15446?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15446, 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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