CVE-2026-18047

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

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
6.5MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100

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 (value × EchelonGraph’s weight)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 28, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 28, 2026
No fix on record yet. Sources: redhat.
Red Hat

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
Red HatMentions a patch (unverified)

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 rangeFix by version rangeDependents
dogtag-pki10.10.2-3 ... 11.2.1-2 (11 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 52× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 175 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 76 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  3. 2026-10-12 16:28 UTCEG score recompute
  4. 2026-10-11 20:08 UTCEG score recompute
  5. 2026-10-11 17:20 UTCEG score recompute
  6. 2026-10-11 14:52 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-07 00:06 UTCEG score recompute
  13. 2026-10-07 00:05 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-10-04 07:10 UTCEG score recompute
  18. 2026-10-04 07:10 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  19. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-10-02 18:24 UTCEG score recompute
  21. 2026-10-02 18:24 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  22. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-10-01 03:44 UTCEG score recompute
  24. 2026-10-01 03:44 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  25. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 39th percentile
Show 74 more
  1. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-09-29 07:47 UTCEG score recompute
  3. 2026-09-29 07:47 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  4. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  5. 2026-09-28 03:24 UTCEG score recompute
  6. 2026-09-28 03:24 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  7. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  8. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  9. 2026-09-25 06:15 UTCEG score recompute
  10. 2026-09-25 06:15 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  11. 2026-09-24 00:18 UTCEG score recompute
  12. 2026-09-24 00:18 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  13. 2026-09-22 21:42 UTCEG score recompute
  14. 2026-09-22 21:42 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  15. 2026-09-20 11:20 UTCEG score recompute
  16. 2026-09-20 11:20 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  17. 2026-09-19 05:17 UTCEG score recompute
  18. 2026-09-19 05:17 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  19. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  20. 2026-09-18 02:07 UTCEG score recompute
  21. 2026-09-18 02:07 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  22. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  23. 2026-09-16 11:50 UTCEG score recompute
  24. 2026-09-16 11:50 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  25. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  26. 2026-09-15 08:49 UTCEG score recompute
  27. 2026-09-15 08:49 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  28. 2026-09-13 19:58 UTCEG score recompute
  29. 2026-09-13 19:58 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  30. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  31. 2026-09-12 17:08 UTCEG score recompute
  32. 2026-09-12 17:08 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  33. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  34. 2026-09-11 15:22 UTCEG score recompute
  35. 2026-09-11 15:22 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  36. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  37. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  38. 2026-09-10 10:11 UTCEG score recompute
  39. 2026-09-10 10:11 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  40. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  41. 2026-09-09 08:02 UTCEG score recompute
  42. 2026-09-09 08:02 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  43. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  44. 2026-09-08 00:59 UTCEG score recompute
  45. 2026-09-08 00:59 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  46. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  47. 2026-09-06 23:14 UTCEG score recompute
  48. 2026-09-06 23:14 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  49. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  50. 2026-09-05 19:10 UTCEG score recompute
  51. 2026-09-05 19:10 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  52. 2026-09-04 12:03 UTCEG score recompute
  53. 2026-09-04 12:03 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  54. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  55. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  56. 2026-09-01 22:54 UTCEG score recompute
  57. 2026-09-01 22:54 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  58. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  59. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  60. 2026-08-31 01:19 UTCEG score recompute
  61. 2026-08-31 01:19 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  62. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  63. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  64. 2026-08-29 23:34 UTCEG score recompute
  65. 2026-08-29 23:34 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  66. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  67. 2026-08-27 21:26 UTCEG score recompute
  68. 2026-08-27 21:26 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  69. 2026-08-26 19:41 UTCEG score recompute
  70. 2026-08-26 19:41 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  71. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  72. 2026-08-25 15:11 UTCEG score recompute
  73. 2026-08-25 15:11 UTCGHSA enrichmentGHSA-5xgg-8pvj-x39g · GitHub CVSS 6.5
  74. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.3% · 20th percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-18047?
CVE-2026-18047 is a medium-severity vulnerability; its CVE record was 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 made public?
CVE-2026-18047 was made public on July 28, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 28, 2026. EchelonGraph's copy of the record carries a last-modified date of July 28, 2026; the record at its source may have been updated since.
Is CVE-2026-18047 actively exploited?
CVE-2026-18047 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18047?
CVE-2026-18047 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18047?
No fix for CVE-2026-18047 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-18047 are linked in the Vendor Advisories panel on this page.

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