CVE-2026-18047

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-07-28. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still routes the request to the handler, allowing unauthorized toggling of the ACME service state including persistent denial of service.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 28, 2026
Patch available. Sources: redhat.
redhat

2507956 – (CVE-2026-18047) CVE-2026-18047 dogtag-pki: pki-core: redhat-pki: pki: ACME admin enable/disable endpoint authentication bypass via trailing slash

https://bugzilla.redhat.com/show_bug.cgi?id=2507956
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-18047

Vendor Advisories for CVE-2026-18047(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
dogtag-pki10.10.2-3 ... 11.2.1-2 (11 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 78× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 23:34 UTCEG score recompute
  3. 2026-08-29 23:34 UTCGHSA enrichment
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 21:26 UTCEG score recompute
  6. 2026-08-27 21:26 UTCGHSA enrichment
  7. 2026-08-26 19:41 UTCEG score recompute
  8. 2026-08-26 19:41 UTCGHSA enrichment
  9. 2026-08-26 14:46 UTCEPSS rescore
  10. 2026-08-25 15:11 UTCEG score recompute
  11. 2026-08-25 15:11 UTCGHSA enrichment
  12. 2026-08-25 13:48 UTCEPSS rescore
  13. 2026-08-24 13:20 UTCEG score recompute
  14. 2026-08-24 13:20 UTCGHSA enrichment
  15. 2026-08-23 11:34 UTCEG score recompute
  16. 2026-08-23 11:34 UTCGHSA enrichment
  17. 2026-08-23 00:19 UTCEPSS rescore
  18. 2026-08-22 09:49 UTCEG score recompute
  19. 2026-08-22 09:49 UTCGHSA enrichment
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-21 08:04 UTCEG score recompute
  22. 2026-08-21 08:04 UTCGHSA enrichment
  23. 2026-08-20 22:55 UTCEPSS rescore
  24. 2026-08-20 06:19 UTCEG score recompute
  25. 2026-08-20 06:19 UTCGHSA enrichment
Show 63 more
  1. 2026-08-19 17:03 UTCEPSS rescore
  2. 2026-08-19 04:33 UTCEG score recompute
  3. 2026-08-19 04:33 UTCGHSA enrichment
  4. 2026-08-18 13:48 UTCEPSS rescore
  5. 2026-08-18 02:39 UTCEG score recompute
  6. 2026-08-18 02:38 UTCGHSA enrichment
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-17 00:53 UTCEG score recompute
  9. 2026-08-17 00:53 UTCGHSA enrichment
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 02:14 UTCEPSS rescore
  12. 2026-08-15 23:08 UTCEG score recompute
  13. 2026-08-15 23:08 UTCGHSA enrichment
  14. 2026-08-15 01:30 UTCEPSS rescore
  15. 2026-08-14 21:22 UTCEG score recompute
  16. 2026-08-14 21:22 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 19:37 UTCGHSA enrichment
  19. 2026-08-12 17:52 UTCEG score recompute
  20. 2026-08-12 17:52 UTCGHSA enrichment
  21. 2026-08-12 13:50 UTCEPSS rescore
  22. 2026-08-11 16:07 UTCEG score recompute
  23. 2026-08-11 16:07 UTCGHSA enrichment
  24. 2026-08-11 13:42 UTCEPSS rescore
  25. 2026-08-11 00:00 UTCEPSS rescore
  26. 2026-08-10 14:21 UTCEG score recompute
  27. 2026-08-10 14:21 UTCGHSA enrichment
  28. 2026-08-09 13:46 UTCEPSS rescore
  29. 2026-08-09 12:36 UTCEG score recompute
  30. 2026-08-09 12:36 UTCGHSA enrichment
  31. 2026-08-08 16:37 UTCEPSS rescore
  32. 2026-08-08 10:50 UTCEG score recompute
  33. 2026-08-08 10:50 UTCGHSA enrichment
  34. 2026-08-07 09:04 UTCEG score recompute
  35. 2026-08-07 09:04 UTCGHSA enrichment
  36. 2026-08-06 13:46 UTCEPSS rescore
  37. 2026-08-06 07:19 UTCEG score recompute
  38. 2026-08-06 07:19 UTCGHSA enrichment
  39. 2026-08-05 19:17 UTCEPSS rescore
  40. 2026-08-05 05:35 UTCEG score recompute
  41. 2026-08-05 05:35 UTCGHSA enrichment
  42. 2026-08-04 15:10 UTCEPSS rescore
  43. 2026-08-04 10:38 UTCEPSS rescore
  44. 2026-08-04 03:30 UTCEG score recompute
  45. 2026-08-04 03:30 UTCGHSA enrichment
  46. 2026-08-03 10:35 UTCEPSS rescore
  47. 2026-08-03 01:45 UTCEG score recompute
  48. 2026-08-03 01:45 UTCGHSA enrichment
  49. 2026-08-02 02:26 UTCEPSS rescore
  50. 2026-08-01 23:59 UTCEG score recompute
  51. 2026-08-01 23:59 UTCGHSA enrichment
  52. 2026-08-01 04:15 UTCEPSS rescore
  53. 2026-07-31 22:14 UTCGHSA enrichment
  54. 2026-07-30 20:26 UTCEG score recompute
  55. 2026-07-30 20:26 UTCGHSA enrichment
  56. 2026-07-30 01:30 UTCEPSS rescore
  57. 2026-07-29 18:26 UTCGHSA enrichment
  58. 2026-07-28 16:40 UTCEG score recompute
  59. 2026-07-28 16:40 UTCGHSA enrichment
  60. 2026-07-28 14:35 UTCEG score recompute
  61. 2026-07-28 13:34 UTCEG score recompute
  62. 2026-07-28 13:05 UTCEG score recompute
  63. 2026-07-28 13:03 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-18047?
CVE-2026-18047 is a medium vulnerability published on July 28, 2026. A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still…
When was CVE-2026-18047 disclosed?
CVE-2026-18047 was first published in the National Vulnerability Database on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18047 actively exploited?
CVE-2026-18047 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 79.8% of all scored CVEs.
What is the CVSS score of CVE-2026-18047?
CVE-2026-18047 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-18047?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18047, 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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