CVE-2026-74243

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 5 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: 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 Red Hat Quay. When the SECURITY_SCANNER_V4_PSK (pre-shared key) is not set, a remote unauthenticated attacker can send POST requests to the security scanner notification endpoint. This allows the attacker to flood the notification queue and inject path traversal characters into Clair API URL paths. The primary consequence is worker resource exhaustion and blind path manipulation on the configured Clair host, potentially leading to a denial of service.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 20, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
Patch available. Sources: redhat.
redhat

2516142 – (CVE-2026-74243) CVE-2026-74243 quay: Unauthenticated secscan notification endpoint in Quay when PSK is unset

https://bugzilla.redhat.com/show_bug.cgi?id=2516142
redhat Patch Available

CVE-2026-74243 - 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-2026-74243

Vendor Advisories for CVE-2026-74243(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 31× in last 7d / 31× 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. 2026-08-21 07:47 UTCEG score recompute
  2. 2026-08-21 07:47 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 20:00 UTCEG score recompute▲ 1.70
  5. 2026-08-20 20:00 UTCGHSA enrichment
  6. 2026-08-20 19:59 UTCNVD updateCVSS v3 → 8.2 · severity → HIGH
  7. 2026-08-20 16:47 UTCEG score recompute
  8. 2026-08-20 16:47 UTCGHSA enrichment
  9. 2026-08-19 17:04 UTCEPSS rescore
  10. 2026-08-19 16:00 UTCGHSA enrichment
  11. 2026-08-18 15:18 UTCEG score recompute
  12. 2026-08-18 15:18 UTCGHSA enrichment
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 13:49 UTCEPSS rescore
  15. 2026-08-18 03:24 UTCEG score recompute
  16. 2026-08-18 03:24 UTCGHSA enrichment
  17. 2026-08-18 02:41 UTCEG score recompute
  18. 2026-08-18 02:41 UTCGHSA enrichment
  19. 2026-08-18 01:24 UTCEG score recompute
  20. 2026-08-18 01:23 UTCGHSA enrichment
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 00:42 UTCEG score recompute
  23. 2026-08-17 00:42 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 6 more
  1. 2026-08-16 02:15 UTCEPSS rescore
  2. 2026-08-16 00:01 UTCEG score recompute
  3. 2026-08-16 00:01 UTCGHSA enrichment
  4. 2026-08-14 23:19 UTCEG score recompute
  5. 2026-08-14 22:49 UTCEG score recompute
  6. 2026-08-14 22:48 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74243?
CVE-2026-74243 is a high vulnerability published on August 14, 2026. A flaw was found in Red Hat Quay. When the SECURITYSCANNERV4_PSK (pre-shared key) is not set, a remote unauthenticated attacker can send POST requests to the security scanner notification endpoint. This allows the attacker to flood the notification queue and inject path traversal characters into…
When was CVE-2026-74243 disclosed?
CVE-2026-74243 was first published in the National Vulnerability Database on August 14, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74243 actively exploited?
CVE-2026-74243 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 82.5% of all scored CVEs.
What is the CVSS score of CVE-2026-74243?
CVE-2026-74243 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-74243?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74243, 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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