Apache APISIX: Improper Validation of Integrity Check Value
CVE-2026-49230 is a critical-severity improper validation of integrity check value vulnerability in Apache APISIX from Apache, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Apache APISIX versions: 3.8.0 through 3.16.0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.3% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Apisix to 3.17.0 or a later version.
- Read the advisory on lists.apache.org for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Apache | Apache APISIX | 3.8.0 through 3.16.0 | Not stated |
| Apache | Apisix | 3.8.0 up to, but not including, 3.17.0 | 3.17.0 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 6.3 | Medium | CNA (apache.org) |
| CVSS 3.1 | 9.1 | Critical | NVD |
Official description
Improper Validation of Integrity Check Value vulnerability in Apache APISIX. The jwe-decrypt plugin under default configuration is vulnerable to authentication bypass. This issue affects Apache APISIX: from 3.8.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Validation of Integrity Check Value
The product does not validate or incorrectly validates the integrity check values or checksums of a message.
How developers prevent this class of flaw
- The protocol specification describes the algorithm used for calculating the checksum. It is then a matter of implementing the calculation and verifying that the calculated checksum and the received checksum match.
More Improper Validation of Integrity Check Value vulnerabilities (CWE-354)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Third-party and government advisories
- openwall.com/lists/oss-security/2026/06/19/12Third Party Advisory
Other vulnerabilities in Apache APISIX
- 7.0 High severity
- 7.8 High severity
- 8.2 High severity
- 8.1 High severity
- 7.5 High severity
- 7.5 High severity
Recent Improper Validation of Integrity Check Value vulnerabilities
- 8.7 High severity
- 9.1 Critical severity
- 7.4 High severity
- 7.2 High severity
- 7.5 High severity
- 7.7 High severity
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