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TI-2024-21520 Aliases CVE-2024-32638GHSA-8g74-32fg-5ghc

Apache APISIX: Forward-Auth Request Smuggling

Priority LOW 30CWE-444Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

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

Summary

Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in Apache APISIX when using `forward-auth` plugin.This issue affects Apache APISIX: from 3.8.0, 3.9.0. Users are recommended to upgrade to version 3.8.1, 3.9.1 or higher, which fixes the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01065 64th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
ApacheApache APISIX3.8.0 – 3.9.0—No fix listedCNA
  • Apache APISIX VendorApache Affected 3.8.0 – 3.9.0 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:apache:apisix:3.8.0:*:*:*:*:*:*:*3.8.0VulnerableApache
cpe:2.3:a:apache:apisix:3.9.0:*:*:*:*:*:*:*3.9.0VulnerableApache
  • cpe:2.3:a:apache:apisix:3.8.0:*:*:*:*:*:*:* Versions 3.8.0 Vulnerable ·Apache
  • cpe:2.3:a:apache:apisix:3.9.0:*:*:*:*:*:*:* Versions 3.9.0 Vulnerable ·Apache

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-32638
  2. 2026-10-03 Alias added: GHSA-8g74-32fg-5ghc

References

Advisory 2

  • TI-2022-08057 apisix/batch-requests plugin allows overwriting the X-REAL-IP header KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2020-10921 In Apache APISIX, the user enabled the Admin API and deleted the Admin API access IP… CVSS 3.1MEDIUM 6.5
  • TI-2026-24457 Apache APISIX: forward auth plugin allows header injection CVSS 3.1CRITICAL 9.1
  • TI-2022-09331 Apache APISIX: the body_schema check in request-validation plugin can be bypassed CVSS 3.1CRITICAL 9.8
  • TI-2021-19447 Path traversal in request_uri variable CVSS 3.1HIGH 7.5
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences