CVE-2026-17011

LOWPre-NVD 3.83.8—
EchelonGraph scoreHIGH confidence

Score 3.8 from GitHub Security Advisory (severity: LOW) published 2026-08-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 3.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
3.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 3.8Exploit: None knownExposed: 0

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

The Nexter Blocks WordPress plugin before 5.0.2 does not restrict who can save global CSS through one of its REST endpoints, allowing users with at least the Contributor role to store arbitrary CSS that is rendered site-wide on the front end, enabling defacement, content hiding, and UI redressing.

CVSS v3
3.8
EG Score
3.8(high)
EG Risk
17(Track)
EG Risk 17/100SSVC: 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
Severity38% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 9, 2026

Last Modified

August 11, 2026

References (1)

Vendor Advisories for CVE-2026-17011(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 / 24× 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 03:51 UTCEG score recompute
  3. 2026-08-20 03:51 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-18 13:48 UTCEPSS rescore
  6. 2026-08-17 09:20 UTCEG score recompute
  7. 2026-08-17 09:20 UTCGHSA enrichment
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 02:14 UTCEPSS rescore
  10. 2026-08-15 01:30 UTCEPSS rescore
  11. 2026-08-14 14:51 UTCEG score recompute
  12. 2026-08-14 14:51 UTCGHSA enrichment
  13. 2026-08-13 22:00 UTCEPSS rescore
  14. 2026-08-12 13:50 UTCEPSS rescore
  15. 2026-08-11 20:20 UTCGHSA enrichment
  16. 2026-08-11 19:51 UTCEG score recompute▲ 3.80
  17. 2026-08-11 19:51 UTCGHSA enrichment
  18. 2026-08-11 19:50 UTCMITRE cvelistV5CVSS v3 → 3.8 · severity → LOW
  19. 2026-08-11 13:42 UTCEPSS rescore
  20. 2026-08-11 00:00 UTCEPSS rescore
  21. 2026-08-09 13:46 UTCEPSS rescore
  22. 2026-08-09 06:23 UTCNVD update
  23. 2026-08-09 06:05 UTCEG score recompute
  24. 2026-08-09 06:05 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-17011?
CVE-2026-17011 is a low vulnerability published on August 9, 2026. The Nexter Blocks WordPress plugin before 5.0.2 does not restrict who can save global CSS through one of its REST endpoints, allowing users with at least the Contributor role to store arbitrary CSS that is rendered site-wide on the front end, enabling defacement, content hiding, and UI redressing.
When was CVE-2026-17011 disclosed?
CVE-2026-17011 was first published in the National Vulnerability Database on August 9, 2026, with the most recent update on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17011 actively exploited?
CVE-2026-17011 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 97.9% of all scored CVEs.
What is the CVSS score of CVE-2026-17011?
CVE-2026-17011 has a CVSS v3.1 base score of 3.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-17011?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17011, 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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