CVE-2026-71216: CWE-319 Cleartext Transmission of Sensitive Information in Apache Software Foundation Apache SkyWalking
Description
Apache SkyWalking versions from 9.6.0 through 11.0.0 have a vulnerability where the PagerDuty alarm hook transmits the integration routing key over unencrypted HTTP. Although PagerDuty redirects HTTP requests to HTTPS, the initial POST containing sensitive information is sent in cleartext before the redirect occurs. This exposure could allow interception of the routing key during transmission. Users are advised to upgrade to version 11.0.0 where this issue is fixed.
CVSS v3.1
Score 5.3medium
Affected software
Apache Software Foundation
Apache SkyWalking
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-71216 describes a cleartext transmission vulnerability (CWE-319) in Apache SkyWalking's PagerDuty alarm hook integration. The integration routing key is sent in the initial HTTP POST request without encryption before PagerDuty issues an HTTPS redirect. This means the sensitive routing key can be exposed during the initial transmission over the network. The vulnerability affects Apache SkyWalking versions 9.6.0 through 11.0.0. The vendor recommends upgrading to version 11.0.0 to remediate this issue.
Potential Impact
The vulnerability allows an attacker with network access to intercept the integration routing key transmitted in cleartext during the initial HTTP POST request. This could lead to unauthorized use of the PagerDuty integration key, potentially allowing attackers to trigger or manipulate PagerDuty alerts. However, the impact is limited to confidentiality as integrity and availability are not affected.
Mitigation Recommendations
Users should upgrade Apache SkyWalking to version 11.0.0, which fixes the cleartext transmission issue. Until upgrading, avoid using the PagerDuty alarm hook over untrusted networks or ensure network-level encryption is enforced. Patch status is confirmed by the vendor advisory recommending upgrade to 11.0.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-08-05T07:46:34.741Z
- State
- PUBLISHED
Threat ID: 6a9a6e3cacd9273b49325902
Added to database: 09/04/2026, 07:07:40 UTC
Last enriched: 09/15/2026, 01:05:14 UTC
Last updated: 10/18/2026, 06:48:19 UTC
Views: 86
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