CVE-2026-15933

MEDIUMPre-NVD 6.96.9
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 70% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.9Exploit: None knownExposed: 0

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

OptimiDoc Server (On-Premise) stores credentials for external services in cleartext. An authenticated administrator can view previously configured service passwords, including SMTP, FTP (for scan delivery), Active Directory (for user list import), and SharePoint credentials, in cleartext via the web administration panel page source, allowing exposure of sensitive third-party authentication data.

This issue was fixed in version 26.08

CVSS v3
6.9
EG Score
6.9(medium)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity69% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 3, 2026
Patch available.
generic

OptimiDoc Server | Optimidoc

https://optimidoc.com/category/optimidoc-server/
generic Patch Available

Vulnerability in OptimiDoc Server (On-Premise) software | CERT Polska

https://cert.pl/en/posts/2026/09/CVE-2026-15933

Vendor Advisories for CVE-2026-15933(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 19× 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. 2026-09-19 12:12 UTCEG score recompute
  2. 2026-09-19 12:12 UTCGHSA enrichment
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-18 10:03 UTCEG score recompute
  5. 2026-09-18 10:03 UTCGHSA enrichment
  6. 2026-09-17 07:55 UTCEG score recompute
  7. 2026-09-17 07:55 UTCGHSA enrichment
  8. 2026-09-16 14:07 UTCEPSS rescore
  9. 2026-09-16 05:46 UTCEG score recompute
  10. 2026-09-16 05:46 UTCGHSA enrichment
  11. 2026-09-16 05:14 UTCEPSS rescore
  12. 2026-09-15 03:38 UTCEG score recompute
  13. 2026-09-15 03:38 UTCGHSA enrichment
  14. 2026-09-14 01:30 UTCEG score recompute
  15. 2026-09-14 01:30 UTCGHSA enrichment
  16. 2026-09-13 16:46 UTCEPSS rescore
  17. 2026-09-12 23:22 UTCEG score recompute
  18. 2026-09-12 23:22 UTCGHSA enrichment
  19. 2026-09-12 15:00 UTCEPSS rescore
  20. 2026-09-11 21:14 UTCEG score recompute
  21. 2026-09-11 21:14 UTCGHSA enrichment
  22. 2026-09-11 14:52 UTCEPSS rescore
  23. 2026-09-11 09:36 UTCEPSS rescore
  24. 2026-09-10 19:06 UTCEG score recompute
  25. 2026-09-10 19:06 UTCGHSA enrichment
Show 19 more
  1. 2026-09-10 09:34 UTCEPSS rescore
  2. 2026-09-09 16:56 UTCEG score recompute
  3. 2026-09-09 16:56 UTCGHSA enrichment
  4. 2026-09-08 22:00 UTCEPSS rescore
  5. 2026-09-08 14:20 UTCGHSA enrichment
  6. 2026-09-07 22:02 UTCEG score recompute
  7. 2026-09-07 22:02 UTCGHSA enrichment
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 19:53 UTCEG score recompute
  10. 2026-09-06 19:53 UTCGHSA enrichment
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-05 17:42 UTCEG score recompute
  13. 2026-09-05 17:42 UTCGHSA enrichment
  14. 2026-09-04 15:33 UTCEG score recompute
  15. 2026-09-04 15:33 UTCGHSA enrichment
  16. 2026-09-03 13:25 UTCEG score recompute
  17. 2026-09-03 13:05 UTCEG score recompute
  18. 2026-09-03 10:27 UTCEG score recompute
  19. 2026-09-03 10:24 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-15933?
CVE-2026-15933 is a medium vulnerability published on September 3, 2026. OptimiDoc Server (On-Premise) stores credentials for external services in cleartext. An authenticated administrator can view previously configured service passwords, including SMTP, FTP (for scan delivery), Active Directory (for user list import), and SharePoint credentials, in cleartext via the…
When was CVE-2026-15933 disclosed?
CVE-2026-15933 was first published in the National Vulnerability Database on September 3, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15933 actively exploited?
CVE-2026-15933 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 70.2% of all scored CVEs.
What is the CVSS score of CVE-2026-15933?
CVE-2026-15933 has a CVSS v3 base score of 6.9 (NVD).
How do I remediate CVE-2026-15933?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15933, 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-2026-15933

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Is Your Infrastructure Affected by CVE-2026-15933?

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