Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-19016— Authorization bypass for session deletion in the transaction API

Quick assessment

Affected
HashiCorp Consul
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HashiCorp Consul是美国HashiCorp公司的一款服务发现与配置管理中间件。 HashiCorp Consul 1.19.1至2.0.2版本存在路径遍历漏洞，该漏洞源于未对通过事务API提交的会话删除操作强制实施{{session:write}} ACL权限，经过身份验证的攻击者可通过网络访问Consul服务器RPC端口，无需持有所需权限即可删除任意会话。

CVSS 4.2 · Medium EPSS 0.21% · P12

Possible ATT&CK Techniques 1 AI

T1499.002 · Service Exhaustion Flood

Affected Version Matrix 2

VendorProduct Version RangeStatus
HashiCorp Consul 1.19.1< 2.0.3 affected
HashiCorp Consul Enterprise 1.19.1< 2.0.3 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-19016

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Authorization bypass for session deletion in the transaction API
Source: CVE Program / CVE List V5
Vulnerability Description
Consul Community Edition and Consul Enterprise 1.19.1 through 2.0.2 did not enforce the {{session:write}} ACL permission for session deletion operations submitted through the transaction API. An authenticated caller with network access to the Consul server RPC port could delete arbitrary sessions without holding the required permission. This vulnerability, CVE-2026-19016, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
HashiCorp Consul 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HashiCorp Consul是美国HashiCorp公司的一款服务发现与配置管理中间件。 HashiCorp Consul 1.19.1至2.0.2版本存在路径遍历漏洞，该漏洞源于未对通过事务API提交的会话删除操作强制实施{{session:write}} ACL权限，经过身份验证的攻击者可通过网络访问Consul服务器RPC端口，无需持有所需权限即可删除任意会话。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
HashiCorp Consul 1.19.1 ~ 2.0.3 -
HashiCorp Consul Enterprise 1.19.1 ~ 2.0.3 -

II. Public POCs for CVE-2026-19016

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-19016

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-19016 (1)

Same Patch Batch · HashiCorp · 2026-08-07 · 8 CVEs total

CVE-2026-15972 7.5 HIGH Unauthenticated denial of service via unbounded external gRPC connection acceptance
CVE-2026-19017 6.8 MEDIUM Consul vulnerable to partial arbitrary file read via Vault Connect CA provider
CVE-2026-19113 5.3 MEDIUM Unauthenticated denial of service via unbounded request body processing
CVE-2026-19012 5.3 MEDIUM Authenticated denial of service in Consul Enterprise-to-Community Edition downgrade path
CVE-2026-19015 5.3 MEDIUM Uncontrolled resource consumption in the Consul Connect CA roots endpoint
CVE-2026-19014 4.3 MEDIUM Uncontrolled resource consumption in the Consul Connect authorization endpoint
CVE-2026-15970 4.2 MEDIUM L7 intention authorization bypass via custom public listener

IV. Related Vulnerabilities

Same product: Consul
Same vendor: HashiCorp
Same weakness: CWE-22

V. Comments for CVE-2026-19016

No comments yet

Leave a comment