CVE-2026-18369

MEDIUMPre-NVD 5.85.8—
EchelonGraph scoreMEDIUM confidence

Score 5.8 from GitHub Security Advisory published 2026-07-30. a secondary CVSS source baseline 5.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
5.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.8Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects without validating that the target is a public address. An unauthenticated ACME account holder can exploit this to perform server-side request forgery (SSRF), making the Dogtag server send HTTP GET requests to internal network services. With the InMemory database backend, the response body of internal targets is disclosed to the attacker through the ACME challenge error.

CVSS v3
5.8
EG Score
5.8(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity58% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

July 30, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Jul 30, 2026
Patch available. Sources: redhat.
redhat

2509234 – (CVE-2026-18369) CVE-2026-18369 dogtag-pki: pki-core: redhat-pki: pki: ACME HTTP-01 validation SSRF via IP literal identifiers and unvalidated redirects

https://bugzilla.redhat.com/show_bug.cgi?id=2509234
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-18369

Vendor Advisories for CVE-2026-18369(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatredhat-pki:10-8060020260814202723.07fb4edf2026-09-14redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

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 28× in last 7d / 81× 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.

Showing the most recent 100 of 146 total refreshes for this CVE.

  1. 2026-09-19 04:19 UTCEG score recompute
  2. 2026-09-19 04:19 UTCVendor advisory
  3. 2026-09-19 04:19 UTCGHSA enrichment
  4. 2026-09-18 19:27 UTCEPSS rescore
  5. 2026-09-18 04:06 UTCEG score recompute
  6. 2026-09-18 04:06 UTCVendor advisory
  7. 2026-09-18 04:06 UTCGHSA enrichment
  8. 2026-09-17 05:07 UTCEG score recompute
  9. 2026-09-17 05:07 UTCVendor advisory
  10. 2026-09-17 05:07 UTCGHSA enrichment
  11. 2026-09-16 14:07 UTCEPSS rescore
  12. 2026-09-16 06:11 UTCEG score recompute
  13. 2026-09-16 06:11 UTCVendor advisory
  14. 2026-09-16 06:11 UTCGHSA enrichment
  15. 2026-09-16 05:14 UTCEPSS rescore
  16. 2026-09-15 07:09 UTCEG score recompute
  17. 2026-09-15 07:09 UTCVendor advisory
  18. 2026-09-15 07:09 UTCGHSA enrichment
  19. 2026-09-14 06:20 UTCEG score recompute
  20. 2026-09-14 06:20 UTCGHSA enrichment
  21. 2026-09-14 05:40 UTCEG score recompute
  22. 2026-09-14 05:40 UTCGHSA enrichment
  23. 2026-09-14 03:10 UTCEG score recompute
  24. 2026-09-14 03:10 UTCGHSA enrichment
  25. 2026-09-13 16:46 UTCEPSS rescore
Show 75 more
  1. 2026-09-13 04:14 UTCEG score recompute
  2. 2026-09-13 04:14 UTCGHSA enrichment
  3. 2026-09-12 15:00 UTCEPSS rescore
  4. 2026-09-12 05:12 UTCEG score recompute
  5. 2026-09-12 05:12 UTCGHSA enrichment
  6. 2026-09-11 14:52 UTCEPSS rescore
  7. 2026-09-11 09:36 UTCEPSS rescore
  8. 2026-09-11 06:15 UTCEG score recompute
  9. 2026-09-11 06:15 UTCGHSA enrichment
  10. 2026-09-10 09:34 UTCEPSS rescore
  11. 2026-09-10 06:58 UTCGHSA enrichment
  12. 2026-09-09 07:18 UTCEG score recompute
  13. 2026-09-09 07:18 UTCGHSA enrichment
  14. 2026-09-08 22:00 UTCEPSS rescore
  15. 2026-09-07 20:03 UTCEG score recompute
  16. 2026-09-07 20:03 UTCGHSA enrichment
  17. 2026-09-07 16:01 UTCEPSS rescore
  18. 2026-09-06 13:47 UTCEPSS rescore
  19. 2026-09-06 09:37 UTCEG score recompute
  20. 2026-09-06 09:37 UTCGHSA enrichment
  21. 2026-09-05 10:41 UTCEG score recompute
  22. 2026-09-05 10:41 UTCGHSA enrichment
  23. 2026-09-04 11:29 UTCEG score recompute
  24. 2026-09-04 11:29 UTCGHSA enrichment
  25. 2026-09-04 05:06 UTCEPSS rescore
  26. 2026-09-02 14:11 UTCEPSS rescore
  27. 2026-09-01 22:39 UTCEG score recompute
  28. 2026-09-01 22:39 UTCGHSA enrichment
  29. 2026-09-01 13:53 UTCEPSS rescore
  30. 2026-09-01 04:39 UTCEPSS rescore
  31. 2026-08-31 23:35 UTCGHSA enrichment
  32. 2026-08-30 21:34 UTCEG score recompute
  33. 2026-08-30 21:34 UTCGHSA enrichment
  34. 2026-08-30 19:17 UTCEPSS rescore
  35. 2026-08-30 01:22 UTCEPSS rescore
  36. 2026-08-29 22:37 UTCEG score recompute
  37. 2026-08-29 22:37 UTCGHSA enrichment
  38. 2026-08-28 21:41 UTCEPSS rescore
  39. 2026-08-27 11:10 UTCEG score recompute
  40. 2026-08-27 11:10 UTCGHSA enrichment
  41. 2026-08-26 14:46 UTCEPSS rescore
  42. 2026-08-26 12:09 UTCEG score recompute
  43. 2026-08-26 12:09 UTCGHSA enrichment
  44. 2026-08-25 13:48 UTCEPSS rescore
  45. 2026-08-25 13:11 UTCEG score recompute
  46. 2026-08-25 13:11 UTCGHSA enrichment
  47. 2026-08-24 14:14 UTCEG score recompute
  48. 2026-08-24 14:14 UTCGHSA enrichment
  49. 2026-08-23 15:18 UTCGHSA enrichment
  50. 2026-08-22 16:21 UTCEG score recompute
  51. 2026-08-22 16:21 UTCGHSA enrichment
  52. 2026-08-21 23:49 UTCEPSS rescore
  53. 2026-08-21 17:24 UTCEG score recompute
  54. 2026-08-21 17:24 UTCGHSA enrichment
  55. 2026-08-20 22:55 UTCEPSS rescore
  56. 2026-08-20 18:27 UTCGHSA enrichment
  57. 2026-08-19 19:30 UTCEG score recompute
  58. 2026-08-19 19:30 UTCGHSA enrichment
  59. 2026-08-19 17:03 UTCEPSS rescore
  60. 2026-08-18 18:46 UTCEG score recompute
  61. 2026-08-18 18:46 UTCGHSA enrichment
  62. 2026-08-18 13:48 UTCEPSS rescore
  63. 2026-08-17 19:49 UTCEG score recompute
  64. 2026-08-17 19:49 UTCGHSA enrichment
  65. 2026-08-17 13:47 UTCEPSS rescore
  66. 2026-08-16 20:11 UTCEG score recompute
  67. 2026-08-16 20:11 UTCGHSA enrichment
  68. 2026-08-16 14:56 UTCEPSS rescore
  69. 2026-08-16 02:14 UTCEPSS rescore
  70. 2026-08-15 21:14 UTCEG score recompute
  71. 2026-08-15 21:14 UTCGHSA enrichment
  72. 2026-08-15 01:30 UTCEPSS rescore
  73. 2026-08-14 22:17 UTCGHSA enrichment
  74. 2026-08-13 23:20 UTCEG score recompute
  75. 2026-08-13 23:20 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-18369?
CVE-2026-18369 is a medium vulnerability published on July 30, 2026. A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects without validating that the target is a public address. An unauthenticated ACME account holder can exploit this to perform server-side…
When was CVE-2026-18369 disclosed?
CVE-2026-18369 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18369 actively exploited?
CVE-2026-18369 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 86.6% of all scored CVEs.
What is the CVSS score of CVE-2026-18369?
CVE-2026-18369 has a CVSS v3 base score of 5.8 (NVD).
How do I remediate CVE-2026-18369?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18369, 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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