CVE-2026-16098

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-16. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

The ProSolution WP Client plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.0.10 via the proSol_handleFileUpload function. This is due to missing validation of the attacker-controlled Content-Disposition header filename, which overrides the allow-listed multipart filename before the file is saved, and a post-save extension check that fails to delete the already-written file. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. The nonce required to reach the upload handler is publicly exposed via wp_localize_script on any front-end page rendering the job portal shortcode, allowing unauthenticated visitors to obtain a valid nonce and bypass that gating check entirely.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

August 16, 2026

Last Modified

August 20, 2026

References (6)

Vendor Advisories for CVE-2026-16098(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 49× in last 7d / 49× 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. 2026-08-21 04:43 UTCGHSA enrichment
  2. 2026-08-21 00:48 UTCEG score recompute
  3. 2026-08-21 00:48 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 20:52 UTCGHSA enrichment
  6. 2026-08-20 16:57 UTCGHSA enrichment
  7. 2026-08-20 13:01 UTCGHSA enrichment
  8. 2026-08-20 12:04 UTCGHSA enrichment
  9. 2026-08-20 08:00 UTCGHSA enrichment
  10. 2026-08-20 04:05 UTCGHSA enrichment
  11. 2026-08-20 00:07 UTCGHSA enrichment
  12. 2026-08-19 20:12 UTCEG score recompute
  13. 2026-08-19 20:12 UTCGHSA enrichment
  14. 2026-08-19 17:03 UTCEPSS rescore
  15. 2026-08-19 16:16 UTCGHSA enrichment
  16. 2026-08-19 12:07 UTCGHSA enrichment
  17. 2026-08-19 08:11 UTCGHSA enrichment
  18. 2026-08-19 04:15 UTCGHSA enrichment
  19. 2026-08-19 00:20 UTCGHSA enrichment
  20. 2026-08-18 20:24 UTCEG score recompute
  21. 2026-08-18 20:24 UTCGHSA enrichment
  22. 2026-08-18 19:30 UTCEG score recompute
  23. 2026-08-18 19:30 UTCGHSA enrichment
  24. 2026-08-18 16:59 UTCEG score recompute
  25. 2026-08-18 16:59 UTCGHSA enrichment
Show 24 more
  1. 2026-08-18 13:48 UTCEPSS rescore
  2. 2026-08-18 12:40 UTCGHSA enrichment
  3. 2026-08-18 08:38 UTCGHSA enrichment
  4. 2026-08-18 04:42 UTCGHSA enrichment
  5. 2026-08-18 00:46 UTCGHSA enrichment
  6. 2026-08-18 00:43 UTCGHSA enrichment
  7. 2026-08-17 20:46 UTCGHSA enrichment
  8. 2026-08-17 16:50 UTCEG score recompute
  9. 2026-08-17 16:50 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 12:55 UTCGHSA enrichment
  12. 2026-08-17 08:59 UTCGHSA enrichment
  13. 2026-08-17 05:04 UTCGHSA enrichment
  14. 2026-08-17 01:08 UTCGHSA enrichment
  15. 2026-08-16 21:12 UTCGHSA enrichment
  16. 2026-08-16 17:16 UTCEG score recompute
  17. 2026-08-16 17:16 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 13:20 UTCGHSA enrichment
  20. 2026-08-16 09:24 UTCEG score recompute
  21. 2026-08-16 09:24 UTCGHSA enrichment
  22. 2026-08-16 05:29 UTCEG score recompute
  23. 2026-08-16 04:41 UTCEG score recompute
  24. 2026-08-16 04:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16098?
CVE-2026-16098 is a critical vulnerability published on August 16, 2026. The ProSolution WP Client plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.0.10 via the proSolhandleFileUpload function. This is due to missing validation of the attacker-controlled Content-Disposition header filename, which overrides the…
When was CVE-2026-16098 disclosed?
CVE-2026-16098 was first published in the National Vulnerability Database on August 16, 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-2026-16098 actively exploited?
CVE-2026-16098 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 52.0% of all scored CVEs.
What is the CVSS score of CVE-2026-16098?
CVE-2026-16098 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-16098?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16098, 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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