CVE-2026-8622

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-06-24. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

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

The Image Sizes on Demand plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via PHP_SELF Server Variable in all versions up to, and including, 1.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The injected payload only executes in the context of an administrator, as the settings page requires the manage_options capability to render.

CVSS v3
6.1
EG Score
6.1(high)
EPSS
6.5%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 29, 2026

References (2)

Vendor Advisories for CVE-2026-8622(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 24× in last 7d / 44× 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. 2026-07-06 19:19 UTCEG score recompute
  2. 2026-07-06 19:18 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 20:10 UTCEG score recompute
  8. 2026-07-05 20:10 UTCGHSA enrichment
  9. 2026-07-05 02:31 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 21:07 UTCEG score recompute
  12. 2026-07-04 21:07 UTCGHSA enrichment
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-03 22:04 UTCEG score recompute
  16. 2026-07-03 22:04 UTCGHSA enrichment
  17. 2026-07-02 22:59 UTCEG score recompute
  18. 2026-07-02 22:59 UTCGHSA enrichment
  19. 2026-07-01 23:57 UTCEG score recompute
  20. 2026-07-01 23:57 UTCGHSA enrichment
  21. 2026-07-01 15:07 UTCEPSS rescore
  22. 2026-07-01 00:55 UTCEG score recompute
  23. 2026-07-01 00:55 UTCGHSA enrichment
  24. 2026-06-30 23:22 UTCEPSS rescore
  25. 2026-06-30 01:52 UTCEG score recompute
Show 19 more
  1. 2026-06-30 01:52 UTCGHSA enrichment
  2. 2026-06-29 14:06 UTCEPSS rescore
  3. 2026-06-29 02:49 UTCEG score recompute
  4. 2026-06-29 02:49 UTCGHSA enrichment
  5. 2026-06-28 14:07 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-28 03:46 UTCEG score recompute
  8. 2026-06-28 03:46 UTCGHSA enrichment
  9. 2026-06-27 04:43 UTCEG score recompute
  10. 2026-06-27 04:43 UTCGHSA enrichment
  11. 2026-06-27 03:08 UTCEPSS rescore
  12. 2026-06-26 05:40 UTCEG score recompute
  13. 2026-06-26 05:40 UTCGHSA enrichment
  14. 2026-06-25 13:50 UTCEPSS rescore
  15. 2026-06-25 06:38 UTCEG score recompute
  16. 2026-06-25 06:37 UTCGHSA enrichment
  17. 2026-06-24 14:05 UTCEPSS rescore
  18. 2026-06-24 07:33 UTCEG score recompute
  19. 2026-06-24 07:29 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8622?
CVE-2026-8622 is a medium vulnerability published on June 24, 2026. The Image Sizes on Demand plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via PHPSELF Server Variable in all versions up to, and including, 1.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary…
When was CVE-2026-8622 disclosed?
CVE-2026-8622 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8622 actively exploited?
CVE-2026-8622 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8622?
CVE-2026-8622 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-8622?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8622, 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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