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CVE-2026-48895 Apache Software Foundation CVE debrief

CVE-2026-48895 is an Open Redirect vulnerability in Apache APISIX, a popular open-source API gateway. An attacker could manipulate client headers to perform an open redirect, potentially exposing the session token. This issue affects Apache APISIX versions from 3.0.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue. The CVSS score for this vulnerability is 2.1, indicating a low severity. However, defenders should still prioritize patching due to the potential for session token exposure. The vulnerability was published on June 19, 2026, and has been tracked by the CVE program.

Vendor
Apache Software Foundation
Product
Apache APISIX
CVSS
LOW 2.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-19
Original CVE updated
2026-06-23
Advisory published
2026-06-19
Advisory updated
2026-06-23

Who should care

Defenders of Apache APISIX installations should prioritize patching this vulnerability. Specifically, anyone running Apache APISIX versions 3.0.0 through 3.16.0 is at risk and should upgrade to version 3.17.0 as soon as possible. This includes administrators of cloud services, enterprise networks, and any other environments where Apache APISIX is used for API management. Security teams should also review their monitoring and incident response plans to address potential open redirect attacks.

Technical summary

The CVE-2026-48895 vulnerability in Apache APISIX allows an attacker to manipulate client headers, leading to an open redirect. This could potentially expose session tokens, although the CVSS score of 2.1 indicates a low severity. The vulnerability exists in Apache APISIX versions from 3.0.0 through 3.16.0. The fix is available in version 3.17.0. The CVSS vector for this vulnerability is 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, indicating a network attack vector with low complexity and no privileges required.

Defensive priority

Low severity but high priority for patching due to potential session token exposure

Recommended defensive actions

  • Upgrade Apache APISIX to version 3.17.0 or later
  • Review and update incident response plans for open redirect attacks
  • Monitor Apache APISIX logs for suspicious redirect activity
  • Inventory Apache APISIX installations to ensure version 3.17.0 or later is deployed
  • Apply compensating controls such as web application firewalls to detect and prevent open redirect attacks

Evidence notes

The primary evidence for this vulnerability comes from the CVE record and the NVD detail page. The CVE was published on June 19, 2026, and has a CVSS score of 2.1. The vulnerability affects Apache APISIX versions from 3.0.0 through 3.16.0. Defenders should verify their Apache APISIX versions and upgrade to 3.17.0 or later. The CVE program and NVD provide official documentation of this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48895 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48895

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-48895 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48895

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.