CVE-2026-27409

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-07-01. the CNA's CVSS baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:github_m, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

Missing Authorization vulnerability in Webba Plugins Webba Booking allows Exploiting Incorrectly...

Missing Authorization vulnerability in Webba Plugins Webba Booking allows Exploiting Incorrectly Configured Access Control Security Levels.

This issue affects Webba Booking: from n/a through 6.4.13.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 1, 2026

Vendor Advisories for CVE-2026-27409(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 / 71× 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. 2026-07-31 11:12 UTCEG score recompute
  2. 2026-07-31 11:12 UTCGHSA enrichment
  3. 2026-07-30 16:27 UTCEPSS rescore
  4. 2026-07-30 12:17 UTCEG score recompute
  5. 2026-07-30 12:17 UTCGHSA enrichment
  6. 2026-07-30 01:30 UTCEPSS rescore
  7. 2026-07-29 12:52 UTCEG score recompute
  8. 2026-07-29 12:52 UTCGHSA enrichment
  9. 2026-07-28 15:36 UTCEPSS rescore
  10. 2026-07-28 13:57 UTCEG score recompute
  11. 2026-07-28 13:57 UTCGHSA enrichment
  12. 2026-07-27 12:10 UTCEG score recompute
  13. 2026-07-27 12:10 UTCGHSA enrichment
  14. 2026-07-26 14:54 UTCEPSS rescore
  15. 2026-07-26 14:54 UTCEPSS rescore
  16. 2026-07-26 13:16 UTCEG score recompute
  17. 2026-07-26 13:16 UTCGHSA enrichment
  18. 2026-07-25 14:18 UTCEPSS rescore
  19. 2026-07-25 14:17 UTCEPSS rescore
  20. 2026-07-24 14:17 UTCEPSS rescore
  21. 2026-07-23 14:18 UTCEPSS rescore
  22. 2026-07-23 14:18 UTCEPSS rescore
  23. 2026-07-23 03:08 UTCEG score recompute
  24. 2026-07-22 14:08 UTCEPSS rescore
  25. 2026-07-22 14:08 UTCEPSS rescore
Show 48 more
  1. 2026-07-21 15:24 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-18 10:04 UTCEPSS rescore
  9. 2026-07-17 02:20 UTCGHSA enrichment
  10. 2026-07-16 17:03 UTCEPSS rescore
  11. 2026-07-16 17:03 UTCEPSS rescore
  12. 2026-07-16 03:25 UTCGHSA enrichment
  13. 2026-07-15 16:57 UTCEPSS rescore
  14. 2026-07-15 16:57 UTCEPSS rescore
  15. 2026-07-15 04:30 UTCGHSA enrichment
  16. 2026-07-15 02:00 UTCEPSS rescore
  17. 2026-07-15 02:00 UTCEPSS rescore
  18. 2026-07-14 05:34 UTCGHSA enrichment
  19. 2026-07-13 22:30 UTCEPSS rescore
  20. 2026-07-13 06:39 UTCGHSA enrichment
  21. 2026-07-13 06:13 UTCEPSS rescore
  22. 2026-07-13 06:13 UTCEPSS rescore
  23. 2026-07-12 07:35 UTCGHSA enrichment
  24. 2026-07-12 05:46 UTCEPSS rescore
  25. 2026-07-11 08:40 UTCGHSA enrichment
  26. 2026-07-11 08:27 UTCEPSS rescore
  27. 2026-07-10 09:46 UTCGHSA enrichment
  28. 2026-07-09 19:10 UTCEPSS rescore
  29. 2026-07-09 10:50 UTCGHSA enrichment
  30. 2026-07-08 15:15 UTCEPSS rescore
  31. 2026-07-08 15:15 UTCEPSS rescore
  32. 2026-07-08 11:53 UTCGHSA enrichment
  33. 2026-07-07 13:46 UTCEPSS rescore
  34. 2026-07-07 12:34 UTCGHSA enrichment
  35. 2026-07-06 16:27 UTCEPSS rescore
  36. 2026-07-06 16:27 UTCEPSS rescore
  37. 2026-07-06 13:39 UTCGHSA enrichment
  38. 2026-07-06 02:23 UTCEPSS rescore
  39. 2026-07-06 02:23 UTCEPSS rescore
  40. 2026-07-05 14:43 UTCGHSA enrichment
  41. 2026-07-05 02:30 UTCEPSS rescore
  42. 2026-07-04 15:48 UTCGHSA enrichment
  43. 2026-07-04 06:31 UTCEPSS rescore
  44. 2026-07-04 06:31 UTCEPSS rescore
  45. 2026-07-03 16:53 UTCGHSA enrichment
  46. 2026-07-02 17:58 UTCGHSA enrichment
  47. 2026-07-01 19:04 UTCEG score recompute
  48. 2026-07-01 19:04 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-27409?
CVE-2026-27409 is a medium vulnerability published on July 1, 2026. Missing Authorization vulnerability in Webba Plugins Webba Booking allows Exploiting Incorrectly... Missing Authorization vulnerability in Webba Plugins Webba Booking allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Webba Booking: from n/a through 6.4.13.
When was CVE-2026-27409 disclosed?
CVE-2026-27409 was first published in the National Vulnerability Database on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27409 actively exploited?
CVE-2026-27409 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 90.6% of all scored CVEs.
What is the CVSS score of CVE-2026-27409?
CVE-2026-27409 has a CVSS v4.0 base score of 5.3 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-27409?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27409, 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-2026-27409

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