TI-2026-21310 Aliases CVE-2026-26365 GHSA-fhhg-8jv8-7rcw

Akamai Ghost on Akamai CDN edge servers before 2026-02-06 mishandles processing of custom…

LOW 18CWE-444Published 2026-02-23 · Updated 2026-02-23

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Akamai Ghost on Akamai CDN edge servers before 2026-02-06 mishandles processing of custom hop-by-hop HTTP headers, where an incoming request containing the header "Connection: Transfer-Encoding" could result in a forward request with invalid message framing, depending on the Akamai processing path. This could result in the origin server parsing the request body incorrectly, leading to HTTP request smuggling.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00201 10th percentileScored 2026-11-07

Fix Fixed Ghost (Akamai): 2026-02-06

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Akamai	Ghost	before 2026-02-06	2026-02-06	Patch available	CNA

Ghost VendorAkamai Affected before 2026-02-06 Fixed in 2026-02-06 Patch available CNA

Remediation

Fix · CNA Ghost (Akamai) Fixed in 2026-02-06

Timeline

2026-10-02 Threatist record created from CVE-2026-26365
2026-10-03 Alias added: GHSA-fhhg-8jv8-7rcw

References

Other 1

https://www.akamai.com/blog/security-research/cve-2026-26365-incorrect-processing-connection-transfer-encoding

TI-2025-31529 Akamai CloudTest before 60 2025.06.02 (12988) allows file inclusion via XML External Entity (XXE) injection. CVSS 3.1MEDIUM 5.8
TI-2008-01698 CRLF injection vulnerability in Akamai Download Manager ActiveX control before 2.2.3.6… CVSS 2.0HIGH 9.3
TI-2019-08229 Akamai CloudTest before 58.30 allows remote code execution. CVSS 3.0CRITICAL 9.8
TI-2019-13582 Enterprise Access Client Auto-Updater allows for Remote Code Execution prior to version 2.0.1. CVSS 3.1CRITICAL 9.8
TI-2016-08233 Akamai NetSession 1.9.3.1 is vulnerable to DLL Hijacking: it tries to load CSUNSAPI.dll… CVSS 3.0CRITICAL 9.8
TI-2026-73755 Guardicore Platform Agent JWT flaw enables resource injection CVSS 3.1HIGH 8.5

See all 21 →

Sources

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