CVE-2026-27690

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-14. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.1Exploit: NoneExposed: 0

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

Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.

CVSS v3
9.1
EG Score
9.1(high)
EPSS
41.7%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated Jul 14, 2026
No patch confirmed yet.
generic

SAP Security Notes & News

https://url.sap/sapsecuritypatchday
generic
https://me.sap.com/notes/3720138

Vendor Advisories for CVE-2026-27690(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 30× in last 7d / 30× 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. 2026-07-16 00:35 UTCEG score recompute
  2. 2026-07-16 00:35 UTCGHSA enrichment
  3. 2026-07-15 20:37 UTCEG score recompute
  4. 2026-07-15 20:37 UTCGHSA enrichment
  5. 2026-07-15 16:57 UTCEPSS rescore
  6. 2026-07-15 16:57 UTCEPSS rescore
  7. 2026-07-15 16:39 UTCEG score recompute
  8. 2026-07-15 16:39 UTCGHSA enrichment
  9. 2026-07-15 12:41 UTCEG score recompute
  10. 2026-07-15 12:41 UTCGHSA enrichment
  11. 2026-07-15 08:42 UTCEG score recompute
  12. 2026-07-15 08:42 UTCGHSA enrichment
  13. 2026-07-15 04:44 UTCEG score recompute
  14. 2026-07-15 04:43 UTCGHSA enrichment
  15. 2026-07-15 02:00 UTCEPSS rescore
  16. 2026-07-15 02:00 UTCEPSS rescore
  17. 2026-07-15 00:45 UTCEG score recompute
  18. 2026-07-15 00:44 UTCGHSA enrichment
  19. 2026-07-14 20:46 UTCEG score recompute
  20. 2026-07-14 20:46 UTCGHSA enrichment
  21. 2026-07-14 16:48 UTCEG score recompute
  22. 2026-07-14 16:48 UTCGHSA enrichment
  23. 2026-07-14 12:50 UTCEG score recompute
  24. 2026-07-14 12:50 UTCGHSA enrichment
  25. 2026-07-14 08:52 UTCEG score recompute
Show 5 more
  1. 2026-07-14 08:52 UTCGHSA enrichment
  2. 2026-07-14 04:53 UTCEG score recompute
  3. 2026-07-14 04:52 UTCGHSA enrichment
  4. 2026-07-14 00:54 UTCEG score recompute
  5. 2026-07-14 00:53 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-27690?
CVE-2026-27690 is a critical vulnerability published on July 14, 2026. Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a…
When was CVE-2026-27690 disclosed?
CVE-2026-27690 was first published in the National Vulnerability Database on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27690 actively exploited?
CVE-2026-27690 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-27690?
CVE-2026-27690 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-27690?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27690, 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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