Apache APISIX: Cas-auth Host header influence on CAS service URL
Published Jun 19, 2026
2.1
LOWCVSS 4.0
EPSS 0.65%
Description
URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Apache APISIX.
The attacker could manipulate some client headers to perform an open-redirect, to potentially expose the session token.
This issue affects Apache APISIX: from 3.0.0 through 3.16.0.
Users are recommended to upgrade to version 3.17.0, which fixes the issue.
Affected products
-
- Version 3.0.0StatusaffectedConstraints<=3.16.0
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache APISIX | unaffected |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jun 22, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Jun–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.65% (0.00646) | 49.18th | v5 (v2026.06.15) |
| Jun 23, 2026 | 0.30% (0.00298) | 21.31th | v5 (v2026.06.15) |
References (2)
- http://www.openwall.com/lists/oss-security/2026/06/19/11 Third Party Advisory
- https://lists.apache.org/thread/yo1kq93ds69zbgjjopop7dmzm7zhj1gq vendor-advisoryVendor AdvisoryMailing List
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/06/19/11 | Third Party Advisory | |
| https://lists.apache.org/thread/yo1kq93ds69zbgjjopop7dmzm7zhj1gq | vendor-advisoryVendor AdvisoryMailing List |
Change history (0)
No recorded changes yet.