CVE-2026-104988

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-10-02. A secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in Dogtag PKI (pki-core). The CMCAuthForEST authentication plugin fails open when an EST fullcmc enrollment request is submitted via BasicAuth without an end-user TLS client certificate. The SSL_CLIENT_CERT session attribute retains the EST subsystem's agent certificate, which causes downstream authorization checks to treat the request as agent-privileged. An authenticated EST user can exploit this to obtain CA-signed certificates with arbitrary subject names.

CVSS v3
8.1
EG Score
8.1HIGHhigh confidence
EG Risk
41
EG Risk 41/100CISA SSVC

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
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 2, 2026

Last Modified

October 5, 2026

Advisory Details (2)

Auto-updated Oct 2, 2026
Patch available. Sources: redhat.
redhat

2545316 – (CVE-2026-104988) CVE-2026-104988 pki-core: dogtag-pki: redhat-pki: pki: EST fullcmc authentication bypass allows certificate mis-issuance with arbitrary subject

https://bugzilla.redhat.com/show_bug.cgi?id=2545316
redhat Patch Available

CVE-2026-104988 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-104988

Vendor Advisories for CVE-2026-104988(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 16× in last 7d / 16× 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. 2026-10-05 09:25 UTCEG score recompute
  2. 2026-10-05 09:25 UTCGHSA enrichment
  3. 2026-10-05 09:10 UTCEG score recompute
  4. 2026-10-05 09:10 UTCGHSA enrichment
  5. 2026-10-05 01:10 UTCEG score recompute
  6. 2026-10-05 01:10 UTCGHSA enrichment
  7. 2026-10-04 23:21 UTCEPSS rescore
  8. 2026-10-04 11:58 UTCGHSA enrichment
  9. 2026-10-03 22:47 UTCEG score recompute
  10. 2026-10-03 22:47 UTCGHSA enrichment
  11. 2026-10-03 14:25 UTCEPSS rescore
  12. 2026-10-03 09:35 UTCEG score recompute
  13. 2026-10-03 09:34 UTCGHSA enrichment
  14. 2026-10-02 20:20 UTCEG score recompute
  15. 2026-10-02 19:46 UTCEG score recompute
  16. 2026-10-02 19:45 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-104988?
CVE-2026-104988 is a high vulnerability published on October 2, 2026. A flaw was found in Dogtag PKI (pki-core). The CMCAuthForEST authentication plugin fails open when an EST fullcmc enrollment request is submitted via BasicAuth without an end-user TLS client certificate. The SSLCLIENTCERT session attribute retains the EST subsystem's agent certificate, which causes…
When was CVE-2026-104988 disclosed?
CVE-2026-104988 was first published on October 2, 2026, with the most recent update on October 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-104988 actively exploited?
CVE-2026-104988 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-104988?
CVE-2026-104988 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-104988?
A fix for CVE-2026-104988 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-104988 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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