CVE-2026-18080

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-26. 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 ERP: Complete HR, Accounting & CRM Suite Built for WooCommerce plugin for WordPress is vulnerable to Unrestricted File Type Upload in all versions up to, and including, 1.17.8 via the save_attachments() function. This is due to missing file extension validation and missing path normalization when CRM Email Connect processes inbound IMAP email attachments. This makes it possible for unauthenticated attackers to send a crafted email to the site's configured inbound mailbox with a forged References header matching the plugin's expected pattern and an attachment filename such as ../helper.php, causing the cron-based IMAP sync job to write attacker-controlled PHP outside of the .htaccess-protected crm-attachments directory and into wp-content/uploads/. On configurations where PHP executes in uploads, this can lead to remote code execution. Exploitation requires the CRM module and IMAP Email Connect feature to be enabled and configured.

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
49%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 26, 2026

References (2)

Vendor Advisories for CVE-2026-18080(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 28× in last 7d / 28× 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. 2026-08-29 18:17 UTCGHSA enrichment
  2. 2026-08-29 14:39 UTCGHSA enrichment
  3. 2026-08-29 11:02 UTCGHSA enrichment
  4. 2026-08-29 07:21 UTCGHSA enrichment
  5. 2026-08-29 03:40 UTCGHSA enrichment
  6. 2026-08-28 23:58 UTCEG score recompute
  7. 2026-08-28 23:58 UTCGHSA enrichment
  8. 2026-08-28 21:41 UTCEPSS rescore
  9. 2026-08-28 16:05 UTCGHSA enrichment
  10. 2026-08-28 12:21 UTCGHSA enrichment
  11. 2026-08-28 08:41 UTCGHSA enrichment
  12. 2026-08-28 05:02 UTCGHSA enrichment
  13. 2026-08-28 01:22 UTCGHSA enrichment
  14. 2026-08-27 21:44 UTCGHSA enrichment
  15. 2026-08-27 18:07 UTCGHSA enrichment
  16. 2026-08-27 14:27 UTCEG score recompute
  17. 2026-08-27 14:27 UTCGHSA enrichment
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-27 10:49 UTCGHSA enrichment
  20. 2026-08-27 07:10 UTCGHSA enrichment
  21. 2026-08-27 03:31 UTCGHSA enrichment
  22. 2026-08-26 23:54 UTCGHSA enrichment
  23. 2026-08-26 20:15 UTCEG score recompute
  24. 2026-08-26 20:15 UTCGHSA enrichment
  25. 2026-08-26 15:52 UTCEG score recompute
Show 3 more
  1. 2026-08-26 12:08 UTCEG score recompute
  2. 2026-08-26 11:20 UTCEG score recompute
  3. 2026-08-26 11:17 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18080?
CVE-2026-18080 is a critical vulnerability published on August 26, 2026. The ERP: Complete HR, Accounting & CRM Suite Built for WooCommerce plugin for WordPress is vulnerable to Unrestricted File Type Upload in all versions up to, and including, 1.17.8 via the save_attachments() function. This is due to missing file extension validation and missing path normalization…
When was CVE-2026-18080 disclosed?
CVE-2026-18080 was first published in the National Vulnerability Database on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18080 actively exploited?
CVE-2026-18080 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 50.9% of all scored CVEs.
What is the CVSS score of CVE-2026-18080?
CVE-2026-18080 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-18080?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18080, 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

Explore the affected products and dependency analysis for CVE-2026-18080

Explore →

Is Your Infrastructure Affected by CVE-2026-18080?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs