CVE-2026-53756

MEDIUMPre-NVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 66% 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
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.9Exploit: None knownExposed: 0

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

Emlog is an open source website building system. Prior to version 2.6.16, Emlog CMS Pro contains a blind SQL injection in User_Model::getUserDataByLogin(). The $account parameter is directly interpolated into SQL queries without any filtering. The vulnerability is reachable through the auth cookie validation path, where $username is extracted from the cookie and passed unfiltered into SQL — guarded only by an HMAC signature that requires AUTH_KEY to forge. This issue has been patched in version 2.6.16.

CVSS v3
4.9
EG Score
4.9(medium)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity49% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Sep 4, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

pro-2.6.16

Patch available: emlog/emlog pro-2.6.16

https://github.com/emlog/emlog/releases/tag/pro-2.6.16
github_commit Patch Available

commit 92b6eea61889 (emlog/emlog)

Patch available: emlog/emlog pro-2.6.16 (contains commit 92b6eea61889)

https://github.com/emlog/emlog/commit/92b6eea618891b28ed0c520564dff26e170645b4
github Patch Available🟡 PoC Available

Emlog v2.6.15 Blind SQL Injection via Authentication Cookie · Advisory · emlog/emlog · GitHub

https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 33× 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 00:08 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-23 23:51 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-22 23:51 UTCEG score recompute
  6. 2026-09-21 23:52 UTCEG score recompute
  7. 2026-09-20 23:53 UTCEG score recompute
  8. 2026-09-20 20:16 UTCEPSS rescore
  9. 2026-09-19 23:54 UTCEG score recompute
  10. 2026-09-18 23:55 UTCEG score recompute
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-17 23:56 UTCEG score recompute
  13. 2026-09-16 23:29 UTCEG score recompute
  14. 2026-09-16 14:08 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 23:30 UTCEG score recompute
  17. 2026-09-13 23:16 UTCEG score recompute
  18. 2026-09-13 16:47 UTCEPSS rescore
  19. 2026-09-12 23:18 UTCEG score recompute
  20. 2026-09-11 23:19 UTCEG score recompute
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-10 23:20 UTCEG score recompute
  23. 2026-09-10 09:35 UTCEPSS rescore
  24. 2026-09-09 23:21 UTCEG score recompute
  25. 2026-09-08 22:01 UTCEPSS rescore
Show 8 more
  1. 2026-09-07 18:28 UTCEG score recompute
  2. 2026-09-07 16:01 UTCEPSS rescore
  3. 2026-09-06 18:29 UTCEG score recompute
  4. 2026-09-06 13:47 UTCEPSS rescore
  5. 2026-09-05 18:30 UTCEG score recompute
  6. 2026-09-04 18:32 UTCEG score recompute
  7. 2026-09-04 17:55 UTCEG score recompute
  8. 2026-09-04 17:54 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-53756?
CVE-2026-53756 is a medium vulnerability published on September 4, 2026. Emlog is an open source website building system. Prior to version 2.6.16, Emlog CMS Pro contains a blind SQL injection in UserModel::getUserDataByLogin(). The $account parameter is directly interpolated into SQL queries without any filtering. The vulnerability is reachable through the auth cookie…
When was CVE-2026-53756 disclosed?
CVE-2026-53756 was first published in the National Vulnerability Database on September 4, 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-2026-53756 actively exploited?
CVE-2026-53756 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 65.7% of all scored CVEs.
What is the CVSS score of CVE-2026-53756?
CVE-2026-53756 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2026-53756?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53756, 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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