CVE-2026-89413

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-18. 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
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

The Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete any arbitrary Filter Gallery records — including all associated filters, image mappings, settings, and details options — by supplying attacker-controlled gallery IDs. The nonce bypass requires omitting the nonce POST field entirely rather than submitting an invalid value, as a present-but-invalid nonce is correctly rejected.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

September 18, 2026

Last Modified

September 18, 2026

References (5)

Vendor Advisories for CVE-2026-89413(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 31× in last 7d / 34× 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. 2026-09-25 08:59 UTCGHSA enrichment
  2. 2026-09-24 21:30 UTCEG score recompute
  3. 2026-09-24 21:30 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 09:23 UTCGHSA enrichment
  6. 2026-09-23 21:54 UTCGHSA enrichment
  7. 2026-09-23 10:25 UTCGHSA enrichment
  8. 2026-09-22 22:56 UTCEG score recompute
  9. 2026-09-22 22:55 UTCGHSA enrichment
  10. 2026-09-22 16:01 UTCEPSS rescore
  11. 2026-09-22 11:24 UTCGHSA enrichment
  12. 2026-09-21 23:55 UTCEG score recompute
  13. 2026-09-21 23:55 UTCGHSA enrichment
  14. 2026-09-21 21:09 UTCEPSS rescore
  15. 2026-09-21 12:26 UTCGHSA enrichment
  16. 2026-09-21 00:57 UTCEG score recompute
  17. 2026-09-21 00:57 UTCGHSA enrichment
  18. 2026-09-20 20:16 UTCEPSS rescore
  19. 2026-09-20 13:27 UTCGHSA enrichment
  20. 2026-09-20 01:58 UTCEG score recompute
  21. 2026-09-20 01:58 UTCGHSA enrichment
  22. 2026-09-19 14:29 UTCGHSA enrichment
  23. 2026-09-19 02:55 UTCEG score recompute
  24. 2026-09-19 02:55 UTCGHSA enrichment
  25. 2026-09-18 19:28 UTCEPSS rescore
Show 9 more
  1. 2026-09-18 15:26 UTCEG score recompute
  2. 2026-09-18 15:26 UTCGHSA enrichment
  3. 2026-09-18 14:34 UTCEG score recompute
  4. 2026-09-18 14:34 UTCGHSA enrichment
  5. 2026-09-18 13:39 UTCEG score recompute
  6. 2026-09-18 13:39 UTCGHSA enrichment
  7. 2026-09-18 07:24 UTCEG score recompute
  8. 2026-09-18 06:59 UTCEG score recompute
  9. 2026-09-18 06:59 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-89413?
CVE-2026-89413 is a high vulnerability published on September 18, 2026. The Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level…
When was CVE-2026-89413 disclosed?
CVE-2026-89413 was first published in the National Vulnerability Database on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89413 actively exploited?
CVE-2026-89413 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.3% of all scored CVEs.
What is the CVSS score of CVE-2026-89413?
CVE-2026-89413 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-89413?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-89413, 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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